The Heart, Part 1 - Under Pressure: Crash Course Anatomy & Physiology #25

Поділитися
Вставка
  • Опубліковано 10 січ 2025

КОМЕНТАРІ • 1,4 тис.

  • @babynem0
    @babynem0 8 років тому +4817

    we college students give you our upmost gratitude. Oh Crash Course, thou has saved my grades.

  • @Sanityspeakssensibly
    @Sanityspeakssensibly 8 років тому +6253

    Guys remember the acronym LAB RAT
    Left
    Atria
    Bicuspid valve
    Right
    Atria
    Tricuspid Valve
    :)

    • @saachigupta2187
      @saachigupta2187 8 років тому +58

      Sannah I Thank youuuuu

    • @hexultima9192
      @hexultima9192 8 років тому +46

      M8, you're a lifesaver! :D

    • @hypedhaneen
      @hypedhaneen 8 років тому +28

      Sannah I Omg ! thank you ! ❤👌

    • @Rannmm874
      @Rannmm874 8 років тому +15

      Thanks

    • @kaec4393
      @kaec4393 7 років тому +13

      Sannah I ❣✅ thank youuu

  • @haileymorgan7468
    @haileymorgan7468 7 років тому +482

    I remember watching this a couple of years ago for the first time when going through A&P 1, trying for the life of me to remember how the circulatory system worked. Fast forward to now, I'm currently a semester 1 nursing student about to head to my first clinical in a little more than a week. It's crazy how time flew by but I'll always make time for a crashcourse refresher

  • @buffyclark2968
    @buffyclark2968 6 років тому +205

    I do not procrastinate! My class just started this section today. I watch CrashCourse first, get a general overview, then go into more and more detail. CrashCourse is not just for students who didn't study, it is also for people who are studying.

  • @zoranhacker
    @zoranhacker 9 років тому +2165

    Am I the only one who somehow feels vulnerable after seeing how an important thing in my body works?

    • @crashcourse
      @crashcourse  9 років тому +329

      zoranhacker Definitely not! We've all been thinking the same thing on set for much of this series.
      -Nicole

    • @RoScFan
      @RoScFan 9 років тому +27

      CrashCourse Isthere any danger to having two hearts? Because if I had the money I would have an artificial heart installed in my body alongside my normal one, exactly for this reason, vulnerability.

    • @komali100
      @komali100 9 років тому +53

      zoranhacker Humans are surprisingly very tender and can die from just a small part of the body going out of whack. The amazing thing is how our bodies naturally regulate themselves so well that we are able to live. Really, I think the more you watch this series, the more you will feel like, "Way to go, body! Way to go."

    • @sacr3
      @sacr3 9 років тому +18

      zoranhacker Don't, the hearts been evolutionarily tested for millions of years and typically the "bad hearts" would fail before the Human could procreate, so the odds of you having a gene that causes heart failure at a young age is all but gone.
      But your lifestyle will affect its performance down the road, so take care of yourself bud.. I didn't, I don't have a heart condition just yet but i'm sure I will and its not a good feeling to be worried about your ticker.

    • @zoranhacker
      @zoranhacker 9 років тому +6

      sacr3 I'm aware of the level of perfection that our bodies are, and I didn't say I was reasonably feeling vulnerable, I just was. And why are you so sure you will have a heart condition? Whatever it is that's bad about your lifestyle can change if you want it to, which I don't see why you wouldn't if the other option is getting a heart condition.

  • @Fantasyvid
    @Fantasyvid 5 років тому +150

    im a nursing student, and i paid 89$ for this online course for learning anatomy & physiology but your videos often give me a better, more overall understanding!

  • @bigsukesakurai
    @bigsukesakurai 9 років тому +346

    Can't believe this video alone taught me what I learned for weeks in school... and more!

  • @fargin2778
    @fargin2778 9 років тому +875

    1. This video enlightened me.
    2. This video killed romance.

    • @mountainman6645
      @mountainman6645 5 років тому

      Oof

    • @toiletpaper5412
      @toiletpaper5412 5 років тому +6

      You’re just dumb if you believed that.....only toddlers should believe that

    • @PatriarchalCompass
      @PatriarchalCompass 4 роки тому +8

      Heartbreaking is real.. your heart has it's own brain cells aswell.. Aztecs, Egyptians and many more ancient cultures knew this but modern western doesn't approve that but more and more were finding that the heart has more powers.. the most important thing to know is that God check ones heart when we die so keep it pure🙏

    • @starwumi
      @starwumi 4 роки тому

      @@PatriarchalCompass te

  • @LDJ27
    @LDJ27 9 років тому +45

    As someone who's had heart problems her whole life, this made more sense than anything doctors have attempted to explain to me, so thanks for that! Really helpful :)

  • @emmamoller8845
    @emmamoller8845 9 років тому +40

    How to break a heart (let it go)
    The heart on call 24 hours a day.
    It is work all throughout the night.
    If it sounds like walking on cold snow.
    We will rush you to the ER.
    It's building pressure up inside.
    Gonna let go, through the atrial valve.
    Don't eat that cake.
    Eat healthy food.
    Go to the gym and skip the chips instead produce.
    Otherwise you heart is screwd!
    Let it be.
    It will beat
    Even if you don't think of it.
    It is your true love.
    Whiteout it you would be dead now!
    It dosent care about what your crush just said.
    Its only job is keeping you alive.
    Hey Hank I expect you to sing this on at least one of you channels. This video gave me goosebumps. Guess I made the right choice to be an MD! Love heart sounds.

  • @AllisonLujan
    @AllisonLujan 7 років тому +2173

    Stop scrolling through the comments and pay attention! You can do it!!

  • @crashcourse
    @crashcourse  4 роки тому +221

    Pssst... we made flashcards to help you review the content in this episode! Find them on the free Crash Course App!
    Download it here for Apple Devices: apple.co/3d4eyZo
    Download it here for Android Devices: bit.ly/2SrDulJ

  • @sofiailardi8826
    @sofiailardi8826 4 роки тому +607

    Who else is here from teachers not wanting to teach during corona, so letting crash course teach us instead?

    • @nuriawilliams6680
      @nuriawilliams6680 4 роки тому +1

      haha yes

    • @andy-zb4dd
      @andy-zb4dd 4 роки тому +1

      XD I am

    • @georginahanna8344
      @georginahanna8344 4 роки тому +8

      "Teachers don't wanna teach, because of corona"
      Like its their choice.
      I'd rather stay alive than teach if I was a teacher

  • @blackmesa232323
    @blackmesa232323 9 років тому +1150

    This is so heart to understand...

    • @SusanWojcucki
      @SusanWojcucki 9 років тому +71

      I thought it was arterieasy

    • @blackmesa232323
      @blackmesa232323 9 років тому +58

      SubscribeToSyndicate This is a hearty load of information.

    • @SusanWojcucki
      @SusanWojcucki 9 років тому +62

      ***** People really don't
      valve-u puns anymore.

    • @bre97bj
      @bre97bj 9 років тому +70

      I will E-ventricle-ly understand this this

    • @Pranboi12
      @Pranboi12 9 років тому +40

      Dont_mindmee its actually quite atri-vi-al

  • @TaiChiKnees
    @TaiChiKnees 9 років тому +49

    And this is why I love you! My pharm students start drugs for angina and heart failure tomorrow, and then I'll have them watch this, and then we'll do hypertension next week. You folks save me valuable class time (and time I would spend making my sad little videos) that I can now use for active learning and case studies. Thank you, thank you! I do also like that you include little shout outs to pathophysiology like the effects of long term hypertension and congestive heart failure. It makes learning the A & P so seem much more relevant to students starting out in the health sciences!

  • @Lardianyt
    @Lardianyt Рік тому +44

    Dear John, I've been graduated from high school for 5 years now (god it's been so much longer than it feels), and I recently was reminded by you that it was you in crash course all those years ago. I downloaded all of them and am now listening through it during work, learning is fun when you're not being forced to.

  • @pawned79
    @pawned79 2 роки тому +6

    A thank you to Crashcourse on behalf of parents! I have been showing my kids your videos for years, and now my oldest is in middle school and participates in all sorts of STEM activities without any direct pressure from me. I’m now showing your videos to my kindergartner, and will be doing so for years to come. Thank you again, and happy holidays.

  • @jam_avery3220
    @jam_avery3220 8 років тому +7

    I am a Nurse and a health professor at a local college in London, Ontario. I think your video's are fantastic Hank!

  • @13luckoftheirish13
    @13luckoftheirish13 9 років тому +326

    I'm a medical student and have a pretty strong stomach for most things but for some reason I just hate hearts - to the point where I've passed out dissecting one. It seems so irrational considering the importance of our and the fact that other organs are absolutely fine for me, but the thought of hearts or the just hearing the sound they make makes me freak out. Great since I'm going to be a doctor, amirite? Loving the anatomy series, helps me recap things I've learned and is funny and interesting. Wish I had these videos back when I was doing my A level biology.

    • @fatimaakamrann
      @fatimaakamrann 5 років тому +10

      Good luck with being a doctor!! I am starting my A levels next year 😅

    • @exceldivine
      @exceldivine 5 років тому +11

      Did you graduate? If so Congratulations! And Cardiology or Cardiovascular wouldn’t be for me

    • @itswarhawk
      @itswarhawk 4 роки тому +1

      I want to be a doctor but first I have to do ma A-levels

    • @sammidee1176
      @sammidee1176 4 роки тому +9

      bwahahah! I am trying to get into nursing school and I feel the same way. Im so glad I am not alone!

  • @MudderFukker-m6g
    @MudderFukker-m6g 8 років тому +235

    Blood flow Acronyms I made up to remember them....
    Valves: "To Perform My All"
    ========
    Tricuspid, Pulmonary, Mitral, Aortic
    T(o)
    P(erform)
    M(y)
    A(ll)
    ======
    Chamber flow: "Real Americans drive RV's from Los Angeles to Las Vegas"
    RA->RV > [Lungs]> LA->LV-> [Aorta]
    R(eal) A(mericans) [drive]
    RV's [from]
    L(os) A(ngeles) [to]
    L(as) V(egas)
    ========
    Hope that helps anyone.

    • @jasminep1106
      @jasminep1106 8 років тому

      thnks

    • @laplacesdemon82
      @laplacesdemon82 8 років тому +4

      Mudder Fukker just don't remember, just understand why it has to be so

    • @MudderFukker-m6g
      @MudderFukker-m6g 8 років тому +7

      I do understand, it's just some mnemonics I made up to remember the formal names.

    • @yhm4325
      @yhm4325 7 років тому +1

      I really have been have been helped. I write exams next month and I really think my class will love this. Thanks so much!

    • @mymidgetbae184
      @mymidgetbae184 5 років тому

      Cool

  • @Blackie919
    @Blackie919 9 років тому +242

    i passed my anatomy class becuz of these videos from crash coarse, thank you for making crash coarse available and free .. i love your voice btw and your fun personality.
    from NORTHDAKOTA

    • @sheridildar5840
      @sheridildar5840 9 років тому +12

      I like his voice and presentation, wish my teacher was so amazing

    • @zoerobertson7827
      @zoerobertson7827 8 років тому +2

      +Faiza Issa am also passing my anatomy course because of his videos! this is truly an amazing thing to have

    • @Zetsuke4
      @Zetsuke4 7 років тому +2

      his coarse voice

    • @justanotherguy3348
      @justanotherguy3348 7 років тому +7

      Did you fail English thought? :>

    • @phranzarteche6085
      @phranzarteche6085 7 років тому +2

      oooh ohoohohoh oho oohohohhoh BURN

  • @sakimaos.3470
    @sakimaos.3470 5 років тому +59

    whenever im listening to this guy, i always feel the need to take a minute to catch my breath even tho i dont need to, hes just talking so fast it feels like hes not breathing lmao

    • @water3252
      @water3252 4 роки тому +2

      shiyakiisa S. They cut out the extra time between sentences

  • @snkit3436
    @snkit3436 4 роки тому +4

    B32 B33
    1:53
    2:21
    2:33
    3:25
    5:09
    6:00
    6:34

  • @kyliesmommy84
    @kyliesmommy84 Рік тому +5

    Hank, thank you. Truly. From chemistry, microbiology and A&P. You’ve been there for me. I’m grateful

  • @emmakearney8956
    @emmakearney8956 5 років тому +5

    quick tip for ya'll who have a hard time watching it cuz he's going to fast: change the speed in the video to 0.75 and he's actually talking at the speed of a normal human. Really helped me out

  • @topherheawl3994
    @topherheawl3994 7 років тому +1

    I'm a Physiology PhD with a CV exam tomorrow and the most valuable 10 minutes of my studying has been watching this video. Even material that goes into in-depth biophysics and abstract concepts is given great context by this refresher. High schoolers and medical students alike should watch this when preparing for any cardiovascular exam.

  • @tre-moon-dous6122
    @tre-moon-dous6122 9 років тому +80

    Such an amazing time to live right now. to be able to learn about the complex heart in a very simple and understandable method..thank you

  • @DemmiiKnoll
    @DemmiiKnoll 8 років тому +8

    Just started my Health degree at University and honestly you've helped me out SO MUCH!!! You're awesome (:

  • @nerdfighterhk9529
    @nerdfighterhk9529 9 років тому +153

    Hi Crash Course! We've translated this episode's Chinese subtitles! Hope you can take a look and allow it to be displayed. Nerdfighters, let's make Crash Course more friendly to every learner :D DFTBA!
    P.S. last time we translated subtitles, they were never put up, so we really hesitated to try again since it took lots of effort and time:( let's hope they are not so busy this time :(

  • @sandervangaver7714
    @sandervangaver7714 6 років тому +3

    I'm studying to become a teacher (biology and English)... but I'm not a good student myself. It's always a lot easier to start looking at these videos than to start studying. This is actualy exactly my subject matter so I guess you guys are helping me out here.

  • @muhammadarshiya633
    @muhammadarshiya633 9 років тому +10

    thankyou guys for the all the work...its really really helping me and my friends to study without getting bored.if any of us have any dought in histology and anatomy we clarify it through your videos...thanks a lottt for your help..and keep it up with it....

  • @pinkblood93
    @pinkblood93 9 років тому +16

    These Anatomy videos are saving my life! Thank you for doing these, they're very helpful and make everything so much easier to digest!

  • @zarahbrookes492
    @zarahbrookes492 Рік тому +6

    Hank Green - teaching me more than my lecturers and prescribed readings ever will. You're a wonder!!!! 💕

  • @vanessamonroe5508
    @vanessamonroe5508 11 місяців тому +2

    You helped me get an A in A&P in nursing school last year thank you !!,

  • @SpunkyGrubber
    @SpunkyGrubber 5 років тому +3

    I am currently a nationally certified EMT and felt I needed to brush up on my cardiac knowledge. This video was very helpful and your personality kept me interested (: Thank you!

  • @DDIAZ-we4dz
    @DDIAZ-we4dz 5 років тому +3

    I'm not religious but. You guys do the lords work! I learn more from you than half of my professors

  • @stevendv8487
    @stevendv8487 9 років тому +7

    7:19 "heart to lung to heart to body to heart again"
    nice rhythm in an episode about the rhythmically beating heart! :D

  • @ieltslisteningbyemma
    @ieltslisteningbyemma 8 років тому +109

    Mr.hank ,I'm a student of class 1 and thank you.For crash course first time I pass in Biology and become the first in class.I'm Anestina,from India.

  • @cynthiajimenez4387
    @cynthiajimenez4387 6 років тому +6

    Love these videos, my A/P professor moves so fast through concepts and these videos break everything down so easy! Thanks for making them for the greater good!

  • @lunaeia9484
    @lunaeia9484 5 років тому +1

    No joke this has helped me more than actually going to class. I go to my tutorials and the tutors expect us to know everything already AND to make class "interesting" instead of making small relevant jokes, they literally just tell stories. Best part, I can literally just watch this at home and not have to attend since attendance isn't required for the theory classes.

  • @korolak56
    @korolak56 8 років тому +8

    You're saving my life this year, I honestly can't thank you enough for this series!

  • @calebshedd1732
    @calebshedd1732 7 років тому +2

    This is such a great explanation! I had to watch it on .75x speed to catch it all. Thanks!

  • @davids.5083
    @davids.5083 9 років тому +10

    Hank, these videos have really been helpful for MCAT review. Thanks for your work!

  • @kimberlycotal2934
    @kimberlycotal2934 2 роки тому +1

    I've learned more from these videos than I have from my professors and textbooks, for some reason my brain can just never understand the way they explain things but this... THIS and the animations are a godsend!

  • @Alyssa-og3qs
    @Alyssa-og3qs 5 років тому +4

    only 40 seconds in and Hank has already crushed my soul that the heart does not care

  • @ebonyskin1
    @ebonyskin1 Рік тому +1

    My goodness! Where have you been? Thank you so much. I was recently diagnosed with a heart issue and this video helped me understand so much I'm almost crying. Again, thanks!

  • @rG_Arcturis_Exigent
    @rG_Arcturis_Exigent 9 років тому +498

    Anybody else started to sing "Under Pressure" when they saw this video uploaded?

    • @lilypippili
      @lilypippili 9 років тому +3

      I DID

    • @GuyWithAnAmazingHat
      @GuyWithAnAmazingHat 9 років тому +3

      HALOUNSC2552 This is the natural thing to do.

    • @Azzarinne
      @Azzarinne 9 років тому +6

      HALOUNSC2552 No, but now I am! XD

    • @crashcourse
      @crashcourse  9 років тому +62

      HALOUNSC2552 We totally sang it on set shortly before the wrap up. (Unfortunately, not while cameras were rolling, so that one won't make the outtakes. MISSED OPPORTUNITY, I KNOW.)
      -Nicole

    • @Kryptoche
      @Kryptoche 9 років тому +1

      HALOUNSC2552 YES

  • @4Nn1E
    @4Nn1E 9 років тому +1

    The heart has always fascinated me. It's insane to me that so many grown ups don't understand what the numbers in the pressure stand for. I had, however, forgotten how all the arteries and veins were positioned, so thanks for reminding me :D

  • @claytonmoorman
    @claytonmoorman 8 років тому +1299

    "Tri" before you "Bi"

  • @ashleylamonster
    @ashleylamonster 2 роки тому

    I watched a ton of CrashCourse during a semester when I had a couple psychology courses (I passed both with one B and one A!) So I came back again now that I have A&P. CrashCourse is definitely a lifesaver. It keeps my attention focused, instead of my eyes glazing over and my brain wandering off like it does during alot of other videos with a very monotone, boring narrator. Thank you CrashCourse ❤️

  • @dottyjyoung
    @dottyjyoung 5 років тому +48

    "I love you, with both my kidneys." - - Mark Lowery

  • @jamilabc18
    @jamilabc18 6 років тому +1

    CrashCourse should have a learning game app, I would play it all the time!

  • @sierralobo7163
    @sierralobo7163 8 років тому +51

    4:08 With the valves opening and closing...The heart looks like it's having a party. XD

    • @lawrencecalablaster568
      @lawrencecalablaster568 7 років тому +4

      Sierra Lobo I thought that too; it's like like hand-clapping valves :)

  • @PinkChucky15
    @PinkChucky15 9 років тому +2

    I remember learning about this in my Biology class in college, I was fascinated then by how the heart works, and I still am. It's really an amazing organ.

  • @Yoghurt67
    @Yoghurt67 11 місяців тому +229

    Am i the only one who was trying to find the heart part 1 by Kendrick Lamar.

  • @dralemsegedlecturessimplif4870
    @dralemsegedlecturessimplif4870 4 роки тому +1

    Crash course,, Wow! As senior clinician i have been really encouraged by your lectures.
    I feel know i have to contirbute my fair share to the world of Medical Science. Thus, I have uploaded my first PPT based video.

  • @veronikafrolova8442
    @veronikafrolova8442 9 років тому +7

    I learn so much from these crash courses. Lectures at my school are too short and boring. This crash course I watch with such enthusiasm. Just love it. Thank you for making A&P easy to learn

  • @everednellac2518
    @everednellac2518 6 років тому +1

    OMG did he just reference The heart is a lonely hunter by Carson McCullers?!?! Be still my beating heart!

  • @iluvDNA100
    @iluvDNA100 9 років тому +708

    If people's hearts actually broke when their date dumped them, we wouldn't have to deal with an overpopulation problem.

    • @RoScFan
      @RoScFan 9 років тому +30

      Joe Seph People really need to start to grasp the fact that overpopulation is coming from 3rd world countries. Western countries actually need a higher fertility rate to just continue existing.

    • @iluvDNA100
      @iluvDNA100 9 років тому +22

      RoScFan

    • @RoScFan
      @RoScFan 9 років тому +5

      agentrikamcgee It's not growing. If anything, it's aging.

    • @juliarose7236
      @juliarose7236 9 років тому +7

      agentrikamcgee it does have one of the largest populations, but the population growth rate has been steadily declining for decades.

    • @bre97bj
      @bre97bj 9 років тому +5

      If that was the case love would merely be an existing emotion (starting from the early humans) according to Darwin with survival of the fittest. It wouldn't be passed down.. So it would be no love in the first place

  • @tunnelvision5851
    @tunnelvision5851 4 роки тому +2

    Day 16 of quarantine, it is currently 3 am. I now have to learn off of these videos and I’m half asleep trying to get all my work done and now I actually miss public school.

    • @guhlore2954
      @guhlore2954 4 роки тому

      Tunnel Vision here from my teacher Mrs.Brown

  • @bluebird4417
    @bluebird4417 7 років тому +6

    Crash course, giving you the cold hard truth of emotion since foreverrrr

  • @maryanthony5661
    @maryanthony5661 8 років тому +2

    You are the reason why I pass A&P, thank you!

  • @Im_Just_A_Dreamer
    @Im_Just_A_Dreamer 9 років тому +6

    8:59 You could write a song about a heart back in high school trying to write its chemistry final! :)
    That could work! :)

  • @cecilyngoka9677
    @cecilyngoka9677 Рік тому +1

    the heart is pumping the blood in our body
    Cash Course is a good understanding of the information and explains the heart.

  • @TheFireflyGrave
    @TheFireflyGrave 9 років тому +37

    Our blood is never blue? My world is shattered.

    • @adelajaini5019
      @adelajaini5019 7 років тому

      TheFireflyGrave The diagram in my science textbook in primary school had the veins in blue and the arteries in red to make is clear enough to see the difference,

    • @rockingtundra2830
      @rockingtundra2830 4 роки тому

      TheFireflyGrave I heard that it’s possible to have blue blood if you have too much copper in your blood

  • @Vancouversour
    @Vancouversour 9 років тому +1

    this guy deserves more than half of my degree when i graduate... ALWAYS digging me out of a hole!!!! THANK YOU!!!!

  • @veronicadots
    @veronicadots 9 років тому +3

    7:43 skrillex! you guys are at a whole new level of awesome :)

  • @YoungBuddhaEzuk
    @YoungBuddhaEzuk 5 років тому +1

    Bruh these videos are the best for a quick review

  • @mgichndz
    @mgichndz 4 роки тому +8

    THANK YOU! I’m a visual learner and you helped me see what I was trying to learn, but unsuccessful, through my medical books. 🙏🏽🙏🏽🙏🏽

  • @m3mphis_chick944
    @m3mphis_chick944 5 років тому +1

    Get this guy back; do whatever it takes he was the best

  • @zephyrvescent
    @zephyrvescent 9 років тому +79

    I hope Hank sees this!
    What's the Point?
    My heart, your heart...
    they all look alike,
    two puffy mounds at the top,
    tapering down into a spike.
    But just why is it
    that they all look the same?
    Shouldn't a person's heart be
    as individual as his name?
    Well, if you look a bit closer
    you will readily see
    that everyone's heart is
    just as different as he (or she!).
    For it's not the shape,
    nor even the size,
    But what's inside
    that is truly the prize.
    The mound on the right...
    holds memories so dear
    only the good ones
    from year after year.
    And the mound on the left,
    is filled to the brim
    with the light of sweet passion,
    that never grows dim.
    Now the part in the middle,
    is where deep love resides.
    Its strength can be fierce,
    Yet here, too, fragility hides.
    Then finally, slowly,
    the heart slopes to a fine edge..
    coming to a sharp point
    in the shape of a wedge.
    This point is for balance
    between all the parts
    which is very important
    for those with full hearts!
    And if you look more closely
    you will see right at the tip
    a tiny little hole
    no bigger than a pin.
    This is the place
    where all our sorrows go
    They stay with us a short while,
    then seep out with the flow.
    Hearts can be lonely,
    Hearts can be sad...
    Hearts can be faithful,
    In good times and bad
    But no matter the shape,
    Nor how big or how small,
    Your heart is a gift,
    To be shared with all.

  • @Chunks2599
    @Chunks2599 5 років тому

    Saved my life once again !!!! THANK YOU! You explain 1 hour lectures in like 10-15 mins!

  • @nicotinekitty1275
    @nicotinekitty1275 6 років тому +12

    I LOVE this channel! I’m so glad I came across this. So knowledgeable and easy to absorb. THANK YOU!

  • @laraislame1266
    @laraislame1266 7 років тому +2

    I actually learned more from this than 40 minutes four times a week has ever taught me

  • @ayatoyuri9498
    @ayatoyuri9498 6 років тому +7

    i love his accent, it makes it easier and nicer to listen to biology facts 😂😂😂

  • @BangWax
    @BangWax 2 роки тому

    at 44 years old, I am getting ready to write my first paper since 1996. A high school grad, but I don't have a high school education. Mattie @ NSCC was here~

  • @KindessisEternal
    @KindessisEternal 9 років тому +204

    Actually, I have a heart condition that led me to only have two of the four chambers of my heart, so this is really interesting.

    • @genteelsatyr
      @genteelsatyr 9 років тому +21

      KindessisEternal I've a condition which messes with my valves, and the right side of my heart. I like to think I have a reasonable grasp of how hearts generally work (and the particular way that mine doesn't work so well) and I enjoyed watching a video which explained things so clearly. I'm hoping from the title of the next video that it might talk more about the beating of the heart. I'm interested in the way that the heart's natural pacemaker works, and the way that my pacemaker replaces that function when it goes awry.

    • @DUES_EX
      @DUES_EX 9 років тому +8

      KindessisEternal Be careful to take care of your heart. My uncle died to having an abnormal heart recentley. Made worse by paramedics

    • @SierraGolf017
      @SierraGolf017 7 років тому +2

      Sterling Archer explain

    • @austrinmiya6510
      @austrinmiya6510 6 років тому +1

      take care

    • @Mary-eo7ir
      @Mary-eo7ir 6 років тому +2

      Which ones, if you don’t mind my asking

  • @hellocloverkitty
    @hellocloverkitty 6 років тому +2

    Thank you! This will help on my quiz tomorrow! I was studying all the words but didn’t really understand them.

  • @andreshuertas7122
    @andreshuertas7122 9 років тому +3

    I just love your videos, I am a fan of Crash Course History, but medicine and biology are also great. Keep pushing hard on knowledge guys, greetings from Colombia.

  • @matthewbennett5353
    @matthewbennett5353 7 років тому +2

    Currently studying for the MCAT that I take this Friday. Very helpful video!

  • @RodrigorReyes123
    @RodrigorReyes123 9 років тому +3

    My favorite crash course video hands down.

  • @belindalucas5468
    @belindalucas5468 2 роки тому +1

    Thank you, thank you, thank you. Crash course is the best. I've learnt so much from these lessons.

  • @sizzlebffsforever8315
    @sizzlebffsforever8315 9 років тому +9

    im watching this because i have a science test tmr
    this really helped

  • @petermurphy8934
    @petermurphy8934 8 років тому

    Yup Hank you are the man, you need to speak with my Physiology Instructor about presenting a clear, concise, and most importantly informative presentation.............. thankyou

  • @KevinMCoring
    @KevinMCoring 9 років тому +11

    Just had my Aorta repaired in April, take care of your hearts guys, it's not fun to get cut opened

    • @KevinMCoring
      @KevinMCoring 9 років тому +1

      John Hassel thanks man! I was out of the game for a month

    • @murrietazgirl
      @murrietazgirl 9 років тому

      Kevin...could you send me an invoice again?

  • @kaemccorkle
    @kaemccorkle 2 роки тому +1

    Someone has got to write a song about broken hearts by pressure. This is so fascinating! not a student, but a professional ASL interpreter and this is some GREAT SCHEMA!

  • @Rumil_
    @Rumil_ 7 років тому +4

    Anatomy test in 30 mins, having this play as i get ready to leave

  • @paulaphillips2784
    @paulaphillips2784 8 років тому +1

    Literally learning more from this than med school.
    I love you guys

  • @tandrewsbliss745
    @tandrewsbliss745 6 років тому +9

    Who's also last minute studying before an exam?

  • @phoenixtorres9339
    @phoenixtorres9339 7 років тому +1

    I swear your videos are the reason i'm passing my classes Lol thank yooouuuu!!!!!!!!!

  • @leahjohnson8478
    @leahjohnson8478 8 років тому +15

    You're so clever but you talk so fast. My college uses you to explain things but most of us can't keep up because the words per second you produce hahaa
    Such a clever man.

  • @kabatesibrenda7876
    @kabatesibrenda7876 7 років тому

    i just cant stop listening to the teacher..... he has got my minds booooo

  • @katrinawall4315
    @katrinawall4315 8 років тому +54

    Okay so I missed a couple of science lessons, mainly where my class learned about all this stuff. And you're telling me that it took them a couple lessons to get through everything. And I learned it all in a 10 minute video.

    • @krystalmata1151
      @krystalmata1151 8 років тому +2

      Katrina Wall FORREAL!!

    • @scp--297
      @scp--297 7 років тому +1

      Katrina Wall
      I know how you feel.

  • @alexplastow9496
    @alexplastow9496 5 років тому +1

    When exams role around, my classmates desperately scramble to begin their scatterbrained frenzies in an effort to regurgitate facts and figures about the inner workings of the human body.
    Meanwhile, I say it's time for a Crash Course marathon.

  • @shehzernaumani5486
    @shehzernaumani5486 7 років тому +4

    all about the LAB RAT, Left Atrium bicuspid, Right Atrium tricuspid

  • @dadadodystar
    @dadadodystar 7 років тому

    this channel is heaven for the biology students

  • @nuwaralabdallat6660
    @nuwaralabdallat6660 5 років тому +8

    Good luck for those who will have their A-level exams
    (including me)

  • @HinamaruHernandez
    @HinamaruHernandez 9 років тому +1

    Awesome video!
    Just want to write an small comment to clarify that when Hank said: "and this is the only time in your body where deoxygenated blood goes though and artery", is technically true for an adult.
    However in the embrionary development the umbilical arteries also carried away deoxygenated blood from the fetus back to the placenta.

  • @blazing.bunny444
    @blazing.bunny444 9 років тому +241

    I'm pretty sure Hank could write a song on that! xD

    • @crashcourse
      @crashcourse  9 років тому +44

      Jeseka C Christieson Probably true.
      -Nicole

    • @NadaMoya
      @NadaMoya 9 років тому +1

      +CrashCourse I highly disagree with you regarding "the heart is just a pump". Science is still not sure if the heart feels or not. But recently many researchers cannot explain why heart receivers feel and change their beliefs just like their heart donors.
      However, I believe that heart actually controls our brains through neurons connection and I can't wait to prove this via lab experiments.

    • @Clips4Yall
      @Clips4Yall 8 років тому

      +Jeseka C Christieson If you is interested in human anatomy the greatest success that I have had was by following the Anatomy Blueprint Pro (just google it) without a doubt the most incredible info i've tried.

    • @breadgenie9640
      @breadgenie9640 8 років тому

      +Nada Alsuhebany heart donors? Then how do the donors live? Is it even possible hahah

    • @chris7247
      @chris7247 8 років тому +1

      Yes, it is possible. And no, they don't live because they're already dead. Heart donors are people who have recently passed away and gave their consent before they died.