Digestive System, Part 2: Crash Course Anatomy & Physiology #34

Поділитися
Вставка
  • Опубліковано 29 вер 2024

КОМЕНТАРІ • 551

  • @crashcourse
    @crashcourse  4 роки тому +119

    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

  • @angelalaplante1451
    @angelalaplante1451 5 років тому +251

    What's the point in paying for college when you can learn more in 20 minutes than you learned in an entire semester.

  • @Kilo6Charlie
    @Kilo6Charlie 9 років тому +115

    I watched this WHILE eating dinner...
    I REGRET NOTHING!!!

  • @SoccerBoi500
    @SoccerBoi500 8 років тому +75

    These videos are half the reason I have an A in Anatomy 2! Thanks Hank!

  • @QUICKFACTS247
    @QUICKFACTS247 Рік тому +16

    I watched crash course for my degree 💀

  • @flexotar
    @flexotar 9 років тому +2

    Oh, man. You guys should totally try to do a chemistry segment where you explain plastination preservation. That would be pretty cool!

  • @annelasowski2739
    @annelasowski2739 8 років тому +1

    Great video. Pop ups don't stay long enough to read though in case they are imparting information that is relevant.

  • @jerrica884
    @jerrica884 8 років тому +4

    All of your videos are a great help!!!!!! love the animation you have!

  • @cloudydawn
    @cloudydawn 9 років тому

    And St. Martin and Beaumont lived on Mackinac Island! I went to the Beaumont museum in 5th grade. Pretty much everyone else found it disgusting.

  • @irenekalaitzidis3493
    @irenekalaitzidis3493 8 років тому

    THESE ARE THE BEST VIDEOS EVER I LOVE YOU CRASHCOURSE

  • @MrUppinakayi
    @MrUppinakayi Рік тому

    i would alos like to say thank you for all the work you put into making the video and flashcards

  • @yaumelepire6310
    @yaumelepire6310 8 років тому

    Yay, French-Canada (otherwise known as Quebec). I'm watching from over there.

  • @diyasaji7723
    @diyasaji7723 6 років тому +1

    I love your work....it helps me a lot...but I have a suggestion....it would be really nice if u could talk a little slower... thanks for these nice videos....😊

    • @soriyaphommachanh8414
      @soriyaphommachanh8414 5 років тому

      Diya Saji on UA-cam they have a setting that you can change so he can talk slower.

  • @cuttlefishluminator7886
    @cuttlefishluminator7886 9 років тому

    crash course is AWESOME

  • @MapleMilk
    @MapleMilk 5 років тому

    This is it, Chief Cells

  • @darrianweathington1923
    @darrianweathington1923 9 років тому

    G-cells? like DG-cells?... as in Dark Gundam cells!?
    THIS EPISODE OF CRASH COURSE WAS MADE WITH THE HELP OF KYOJI!!!!!!!!!!!!!

  • @patriciamiller8785
    @patriciamiller8785 8 років тому +1

    Thank you so much! This got me an A on my bio report:))) so helpful

  • @Murphy252000
    @Murphy252000 7 років тому +1

    Thank you. You guys rock

  • @shimaa2348
    @shimaa2348 4 роки тому

    Cookies are coming maybe u want to prepare yourself !!😂😂😂

  • @chukwukanwabueze8304
    @chukwukanwabueze8304 5 років тому

    all this digestive talk is making me hungry *drools*

  • @AznPr1des
    @AznPr1des 9 років тому

    lymphatic system next please :(

  • @alyssagonzalez2301
    @alyssagonzalez2301 8 років тому

    At 1:26 does anyone else notice cloggsworth

  • @j2a845
    @j2a845 5 років тому

    Bowman same guy whose name is in nephron right? (Bowman's capsule)

  • @cleoodusoga8617
    @cleoodusoga8617 7 років тому

    i thought the entroendocrine cells were in the small intestines? entro is greek for intestinal... but why is it mentioned in the stomach instead???

  • @alexpisman6838
    @alexpisman6838 9 років тому

    will there be new history vids?

  • @therabbithat
    @therabbithat 7 років тому

    how did he sleep at night? on his back, presumably

  • @sarahemf
    @sarahemf 9 років тому

    question why do some people make a sound when they eat or drink

  • @chibiprussia5574
    @chibiprussia5574 9 років тому

    I threw up in the second grade in school. Throwing up isn't fun ;-;

  • @bruv994
    @bruv994 6 років тому

    Does anyone have a good diagram of the mouth?

  • @MaevePinto
    @MaevePinto 9 років тому

    Do I get participatory points for being home sick with a stomach bug when I watched this video? All your assumptions about whether the viewers had just regurgitated were unfortunately wrong in my case.

  • @Shure_Lock
    @Shure_Lock 7 років тому

    you gotta be kidney me, he got a shot! after that he had a hole (y) stomach which led to many discovarteries.

  • @Morbidt123
    @Morbidt123 9 років тому

    7:33 Brain monocle

  • @WhiteRaven621
    @WhiteRaven621 6 років тому

    MMM nachos and spit. lol

  • @joshbobst1629
    @joshbobst1629 9 років тому

    The intros are getting pretty long. And Hank was right, it did trigger my gag reflex.

  • @deanporter3509
    @deanporter3509 Рік тому

    PETITION TO MAKE HIM STOP SAYING CREAMY PASTE

  • @sanaearthfire3833
    @sanaearthfire3833 5 років тому

    Why do all of so very well began CRash Course stories end up with somebody being killed or threatend %)

  • @rjfaber1991
    @rjfaber1991 9 років тому +9

    So gunwounds can lead to medical breakthroughs? Please don't tell those organisations in the US opposed to gun control. They're being annoying enough as it is, even to someone who isn't from the US...

    • @CheLudo037
      @CheLudo037 9 років тому +4

      oh yeah sure, let the massacres happen, someday we'll discover how poop is created, especially since we still have the same knowledge and skills in medecine as they had centuries ago. Sorry to point out how stupid your comment is

    • @truboo4268
      @truboo4268 9 років тому +1

      +Robert Faber I'm sure that St. Martin really disagrees that a gun can cause more good than harm. The dude had a hole in his stomach.

    • @rjfaber1991
      @rjfaber1991 9 років тому +2

      ChBro20 You do realise that what you're saying is exactly my point, right, except with less cynicism?

    • @tomjones1974
      @tomjones1974 9 років тому

      +ChBro20 yooo you a peaaaak geeza

    • @CheLudo037
      @CheLudo037 9 років тому

      +Robert Faber oh my bad then, still need to master the skill of reading UA-cam comments.

  • @LifeIsForEmos8D
    @LifeIsForEmos8D 9 років тому +923

    I have a feeling Beaumont WAS the hunter!!

  • @andrewdjburke
    @andrewdjburke 6 років тому +544

    I could learn to be a rocket scientist with this guy as my teacher.
    You have the best method of teaching I have experienced thus far.
    Please never stop making more science videos.

  • @sanjaymahajan2202
    @sanjaymahajan2202 8 років тому +541

    I watch crash course for my exams

  • @explained4242
    @explained4242 4 місяці тому +7

    This dude is legit. even 8 years later in 2024.

  • @TheFireflyGrave
    @TheFireflyGrave 9 років тому +269

    St. Martin had a holy (hole-y) stomach. He's now the patron saint of the digestive system, the internet and all other tubes everywhere.

    • @FROPDESAI
      @FROPDESAI 9 років тому +2

      +TheFireflyGrave Holey Coral. Holey.

    • @crashcourse
      @crashcourse  9 років тому +73

      +TheFireflyGrave You've done good work here.
      -Nicole

    • @FROPDESAI
      @FROPDESAI 9 років тому +17

      CrashCourse NOTICE ME NICOLE SENPAI! NOTICE ME!

    • @PorshaLaVieBelle
      @PorshaLaVieBelle 7 років тому +2

      TheFireflyGrave lol.love it

  • @NathanFales
    @NathanFales 9 років тому +592

    This video is more than I can stomach.

    • @epistax4
      @epistax4 9 років тому +16

      +Nathan Fales This stomach is more than I can bacon.
      Wait that doesn't make sense.
      Wait actually it kind of does.

    • @benaaronmusic
      @benaaronmusic 9 років тому +57

      +Nathan Fales - You gotta be kidney me. These puns are hard to swallow.

    • @dhartmahmed50
      @dhartmahmed50 9 років тому +8

      +Nathan Fales MY QUEST IS AT AN END. Looking for the pun comment in this video.

    • @carolinestbmw8695
      @carolinestbmw8695 7 років тому +2

      Ben Aaron 😂😂GOOD ONE

    • @LuisSierra42
      @LuisSierra42 6 років тому +15

      this comment section is more than i can digest

  • @NaturallyPrettyBrownK26
    @NaturallyPrettyBrownK26 6 років тому +54

    My mouth dropped after googling and finding out that the story between Sir Martin and Beaumont actually happened 😦

  • @ryancspencer999
    @ryancspencer999 6 років тому +74

    I watched this while eating, it was a very weird experience.

  • @SuperMissIsabelle
    @SuperMissIsabelle 7 місяців тому +14

    I'm a medical student and after every lecture I always come here to understand better. You're the best!! Literally wouldn't pass my tests without you!

  • @alyssaatkinson7029
    @alyssaatkinson7029 5 років тому +134

    It’s 2019(I’m aware this was posted a while ago), and I’m using this to help me with my science project and I just want to thank you for making these high quality videos that help educate people.

  • @withanametocome
    @withanametocome 8 років тому +189

    Part 1: mouth
    Part 2: stomach
    I do not like where this is going

  • @sosassteelstrings9623
    @sosassteelstrings9623 4 роки тому +3

    Is it wrong for me to salivste as I watch this video?

  • @ahsanzee510
    @ahsanzee510 7 років тому +242

    So how does St.Martin take a shower

    • @JingLiisnotreal
      @JingLiisnotreal 7 років тому +89

      Now we're asking the real questions.

    • @gorgeous3325
      @gorgeous3325 7 років тому +35

      Right?? That's hard enough to do with a plaster cast on your arm, let alone a gaping hole in your... well, in _you_!

    • @nexuswolf780
      @nexuswolf780 6 років тому +17

      Isn't that hard; you literally have a doctor as your servant.

    • @blackbogbrewing3186
      @blackbogbrewing3186 6 років тому +61

      How did he do a lot of things??? Like sleep on his back or torso without stomach acid getting all over the sheets.

    • @joecurran2811
      @joecurran2811 6 років тому +7

      Brendan Phares he sounds like a legend to me!

  • @mitchell186199
    @mitchell186199 8 років тому +64

    Great video! Just a single correction I would do: Gastrin (6:55) is excrated in the blood, not in the stomach itself (gastrin is a hormon after all, not an enzyme)

    • @Zizzyyzz
      @Zizzyyzz 5 років тому +7

      Is a "hormon" like a hormonal Mormon?

    • @diyapudota
      @diyapudota 4 роки тому +21

      YOU DARE CORRECT CRASH COURSE

  • @123ObbYzz
    @123ObbYzz 7 років тому +72

    First year at uni this is my only revision tool

    • @palaksharma1777
      @palaksharma1777 7 років тому +3

      Sending you blessings from second year at uni

    • @kensom8796
      @kensom8796 7 років тому +1

      1st year.
      Am i too late?

    • @Aphelia.
      @Aphelia. 4 роки тому +3

      3rd year of high school here. How's uni going?

    • @animeandstuff5377
      @animeandstuff5377 4 роки тому

      @@Aphelia. y u even need this info in highschool

    • @smartassnerd4287
      @smartassnerd4287 4 роки тому

      @@animeandstuff5377 what do you think we learn at high school????

  • @Sup3rD4ve
    @Sup3rD4ve 6 років тому +62

    My parents met while working at, and I and my brother were both born at, William Beaumont Hospital in Royal Oak, Michigan.

    • @arthas640
      @arthas640 5 років тому +5

      I went to a school named after St Martin... it was a different St Martin, but still...

    • @luvu4evr1999
      @luvu4evr1999 4 роки тому +1

      I work at Beaumont in Troy!!

    • @luvu4evr1999
      @luvu4evr1999 4 роки тому +1

      Um... yeah. If someone was that desperate to find me they could without the comment. It’s not like I said what floor I work on and the hours I’m there. It’s a BIG hospital with lots of security. Plus there are 3 Beaumont’s in Troy so come find me 😂😂

  • @sjoerdwennekes
    @sjoerdwennekes 9 років тому +28

    In my language (which is Dutch) we also use the word "bolus", but here it means turd... So the same word, but for the thing that comes out of your digestive system, and not for what goes in it. At least I hope... o.O

  • @HappiSweetPea
    @HappiSweetPea 4 роки тому +6

    If anyone wants more about St Martin and Beaumont, there is a Sawbones episode about it labeled The Gut Hole Romance. It's incredibly interesting.

  • @erilassila409
    @erilassila409 7 років тому +33

    My digestive system is interesting. I've had chronic constipation since the age of three, and recently my number twos got drastically softer than usual, and my blood tests showed as if there was something wrong with my liver. I found out from a nurse (my mom) and a doctor we know, that it might be vitamin d deficiency. I got wonderfully skinny (waist circumference 81 cm) and started taking vitamin d regularly. it was really funny! I thought I was dying of liver cirrhosis and had to stop my favorite pastime (student parties) and it was just me forgetting to eat my vitamin d pills. Once I took my vitamins, my poop became harder and brown again. I actually found out what this whole poop shenanigan was, thanks to Hank and SciShow!

  • @yourfriendlyneighbourhoodh4700
    @yourfriendlyneighbourhoodh4700 9 років тому +13

    Im wondering why vomiting can be caused by a miscommunication in the brain, like how car sickness is caused by your body saying "I'm sitting still" and your visual cortex saying "were on the move"
    I'm guessing it's an adaptation to poisons? Poisons can cause miscommunication therefor the body will try remove them from the body. I'm just speculating if anyone has a definitive answer please let me know

    • @maxk8486
      @maxk8486 6 років тому +2

      Its not necessarily a miscommunication, its more just your body is getting ready for the fight/flight and so what happens is you don't want stuff in your stomach being digested and potentially using up energy that could be used in your fight/flight

    • @solaria9
      @solaria9 6 років тому +2

      You've pretty much hit it spot on. Your body hasn't caught up to modern times so it still assumes all miscommunication is from poison

  • @hartbigfan1714
    @hartbigfan1714 7 років тому +7

    dude I study medicine and when I first clicked on this video I thought "Oh well it's just a cartoon thing - it can't be that detailed" and I was amazed by all the things he said: It's all correct and so detailed and just on a really high niveau of education while explainig it very simple :D

  • @sheridildar5840
    @sheridildar5840 8 років тому +34

    Unless Hank presents it, I don't watch because it is not so interesting. It's like watching Big Bang Theory without Sheldon.😁😁😁

  • @alexandergonchiy1298
    @alexandergonchiy1298 9 років тому +52

    8:33 - "If you are super anxious, [...] you're sympathetic nervous system will also inhibit gastric secretion [...]"
    "You're" instead of "your" in scishow? Woah.

    • @kitsunekyubino9345
      @kitsunekyubino9345 9 років тому +2

      +Kehla Martri It wasn't clear, because my resolutions not very good today, but I think it also had effect (noun) where it should have been affect (verb).

    • @kitsunekyubino9345
      @kitsunekyubino9345 9 років тому +1

      Woo! Somebody beat somebody to something!

    • @AzureKite
      @AzureKite 9 років тому +2

      +Roberta Tallienne Better than beating something to somebody if you catch my drift ;)

    • @kitsunekyubino9345
      @kitsunekyubino9345 9 років тому

      I actually don't. Is it something sexual?

    • @AzureKite
      @AzureKite 9 років тому

      Roberta Tallienne y-yes... nevermind

  • @jinglinli4491
    @jinglinli4491 9 років тому +18

    This video is more than I can stomach.

  • @naisharao
    @naisharao 6 років тому +11

    Very nice explanation of digestion . Thank you so much CRASH COURSE . You teach very well Hank . In a 10 minute video , all main concepts are explained .

  • @ant420
    @ant420 9 років тому +20

    How can you keep a hole open? Shouldn't the acid spill out

    • @drewg.4779
      @drewg.4779 9 років тому +2

      I imagine that they plugged it up somehow

    • @tjshah8704
      @tjshah8704 6 років тому

      no

    • @KrisRyanStallard
      @KrisRyanStallard 6 років тому +2

      It did at times. If I remember correctly, he couldn't sleep laying flat.

  • @angelsRsinging
    @angelsRsinging 6 років тому +7

    Was anyone else eating and watching this and then became extremely aware of what your tongue and mouth were doing?...ya I don't know how to eat anymore :P

  • @macwas5900
    @macwas5900 9 років тому +34

    Againnnnn, the intro played a quarter way into the video. GOD DAMN IT, HANK!

    • @truboo4268
      @truboo4268 9 років тому +3

      +Mac Was Pfff... Watch CC Psychology. A few episodes have intros that are almost HALF the episode.

    • @xrystalskyes2838
      @xrystalskyes2838 9 років тому

      That happens to me in other videos but didn't happen in this one, I think that is UA-cam's fault. But who is Hank?

    • @macwas5900
      @macwas5900 9 років тому +1

      Bryan Cotto But Hank... oh my God, he just rambles on before the intro even plays, EVERY TIME. Every time while everyone else (That I watch on CC) just says a short thing, like a pun or short bit of info for 10-20 seconds and then let the intro play, then get to the point. Hank, though... HE JUST GIVES AN ENTIRE SUMMARY AND SPEECH BEFORE IT STARTS! XD

    • @macwas5900
      @macwas5900 9 років тому +1

      Osiris 12
      It's the dude talking in this video... O_O

    • @xrystalskyes2838
      @xrystalskyes2838 9 років тому +1

      I see what you mean... I didn't mind it

  • @aparnatalukdardas584
    @aparnatalukdardas584 2 роки тому +7

    Thanks a lot! Sir your videos make it so much easier to learn such complex topics. I'm in class 8 now but I still can understand it quite well. Kudos to you and your team!!!

  • @laurabalfour8970
    @laurabalfour8970 8 років тому +6

    holy shit how can you keep a hole open on your body?? doesn't the blood keep spilling?? just imagining it creeps me out and makes me wanna puke

    • @delilahfox3427
      @delilahfox3427 8 років тому +2

      I would assume that the muscles and blood vessels healed after a short time.

  • @Richard_is_cool
    @Richard_is_cool 4 роки тому +1

    Fun fact, Pepsi is named after pepsin, because the idea was it would help with digestion.

  • @cynthiasonier5142
    @cynthiasonier5142 9 років тому +13

    I know that we french-canadians have tough stomachs...after all we gave the World poutine...and poutine with fried chicken...and poutine with bacon...and poutine pizza, but COME ON!

    • @zerocalvin
      @zerocalvin 9 років тому +4

      +Cynthia Sonier well the chinese would like to have a word with french-canadians.. after all, they eat alot of questionable things like fried rotten tofu..

    • @lillybee2951
      @lillybee2951 9 років тому

      FUCK THAT SHIT us qubecers DO NOT HAVE FAST IMMUNE SYSTEMS !!

    • @kaputasri
      @kaputasri 9 років тому

      +Cynthia Sonier How about the eskimos and the swedes with their surstromming?

    • @Asummersdaydreamer14
      @Asummersdaydreamer14 9 років тому +4

      +Cynthia Sonier I am sorry, but I just cannot resist challenging the poutine with something requiring an even stronger stomach. I think any Southeast Asian who eats balut (I suggest looking up the term before finding the image.) might have tougher stomachs than French-Canadians. Feel free to disagree!

    • @Hahaha00003
      @Hahaha00003 9 років тому +1

      +Asummersdaydreamer14 It is likely that the definition of "strong stomach" is different between you and Cynthia!!

  • @stoneroses3493
    @stoneroses3493 5 років тому +2

    I cracked up laughing at 9:48 lol!

  • @lukesinclair-ford4822
    @lukesinclair-ford4822 8 років тому +3

    I have to admit that more than once I have laughed whilst swallowing and had food move up into my nasal cavity instead of down my gullet. Resultantly, I had a large lump of in digested bread come out of my nose a few hours later. Sorry to gross you out, but just saying that it can happen. The pallet isn't always working as it should :/ for me, anyways ;3;

  • @echologname
    @echologname 4 роки тому +3

    8:35 is why IBS can be so problematic for some people. Stress makes me feel like I'm being stabbed in the gut, I have to spend hours on the toilet and eat only bland things. It's not fun, I'm glad I'm now taking anxiety medicine.

  • @parthjobanputra313
    @parthjobanputra313 9 років тому +7

    Crash course is going so well I have watched crash course biology 😍😍😍😍
    it helped me a lot to clear my tests n now A &P is equally fantastic
    Hank Green is just awesome. ....God bless that guy

  • @losthighwaygnr3685
    @losthighwaygnr3685 9 років тому +7

    God Bless you guys ( especially Hank ! ) - I adore these Biology Videos :)!

  • @mkbashlorthecaredriver9517
    @mkbashlorthecaredriver9517 5 років тому +6

    I just started watching this channel today to learn more about the digestive system, due to some recent medical issues I've had. This guy is so funny. I'm gonna keep going. Thank you!

  • @christinevakas92
    @christinevakas92 2 роки тому +3

    Thank you for the laughs. You make education 'simple' and fun.

  • @Just_different132
    @Just_different132 4 роки тому +3

    Dude i know its too late, but you just saved me. OMG 10x better than my lecturers!

  • @autentyk5735
    @autentyk5735 4 роки тому +1

    Oh my bloody god @ the 08:32 your vs you're. I thought this was my favorite EDUCATIONAL channel, not one where the one single most appalling error feels at home.

  • @Azzarinne
    @Azzarinne 9 років тому +2

    You were really trying to make us sick with this one, weren't you? XD
    The soda cans full of saliva are what got to me... **gurggle**

  • @12belvasanithayar.k.93
    @12belvasanithayar.k.93 4 роки тому +4

    how he could stay alive while his stomach was opened?:"

    • @jasonvorhees1709
      @jasonvorhees1709 4 роки тому +1

      Because stomach is not vital organ and besides the bacterias are killed by hcl entering the stomach

  • @Morgan-jo7xy
    @Morgan-jo7xy 6 років тому +2

    Whoop whoop. Who is here for bio finalssss

  • @shannelpanton2696
    @shannelpanton2696 6 років тому +1

    That story just killed me

  • @KiraThompson
    @KiraThompson 4 роки тому +2

    I’m eating chips right now...

  • @AlexanderEmmanual
    @AlexanderEmmanual 9 років тому +2

    If your nervous your sympathetic nervous system will inhibit gastric secretion was the biggest take away for me. I remember when I was younger id get nervous/anxious in certain situations and loose all my appetite and suddenly my bowels/bladder felt like they had to get rid of everything in my body. Was really SHIT.

    • @amyannaroy8357
      @amyannaroy8357 6 років тому

      Alexander Sandalis Same​ here😁😂

  • @12belvasanithayar.k.93
    @12belvasanithayar.k.93 4 роки тому +2

    I will tell my biology teacher about this wonderful channel. Maybe we can learn together with this.

  • @tambuko8075
    @tambuko8075 6 років тому +8

    Why does my mouth water when I see a girl I like? She isn't food
    (this is just a joke not be taken seriously. Don't assume gender)

  • @thetrouts1
    @thetrouts1 9 років тому +2

    hey - can u make one about periods/ovulation? i need to know what is happening in my body atm and you are my fav source of body information

  • @jimmyd1143
    @jimmyd1143 9 років тому +3

    John and Hank Green are my favorite Greens

  • @beccawatters4638
    @beccawatters4638 6 років тому +3

    I work at Beaumont Hospital.... hmmm is this where the name came from???

    • @OP-xi1hv
      @OP-xi1hv 4 роки тому

      Beaumont shot that dude.

  • @XStoneColdFoxX
    @XStoneColdFoxX 4 роки тому +2

    6:11 lol. I love how they animated a chicken leg inside his coffee cup.
    This video reminds me of fistulated cows that are used to study their digestion.

  • @روزىٓه-ه5خ
    @روزىٓه-ه5خ 4 роки тому +1

    GREAT WORK👍🏻💪🏻😱

  • @somenerdyblonde
    @somenerdyblonde 9 років тому +3

    I'm loving this subsection of a&p. My physiology class didn't go into much detail, and I love the digestive system. I do wish the lack of knowledge about vomit was acknowledged.

  • @samanthacohen7272
    @samanthacohen7272 6 років тому +1

    That is A LOT of nachos...
    Mixed with spit.
    ~Hank Green 2015

  • @travisk5589
    @travisk5589 4 роки тому +2

    I like how st Martin never wore a shirt post gunshot wound

  • @gokbox
    @gokbox 9 років тому +4

    Thanks for the video it was informative

  • @gulnasreen1067
    @gulnasreen1067 4 роки тому +1

    Do not mind but healthy saliva is slightly alkaline not acidic

  • @railene9335
    @railene9335 7 років тому +1

    Crash course, I was wondering if you had like a basic summary of the whole digestive system or any other systems, because I am taking down notes. Thank you

  • @sarai9102
    @sarai9102 6 років тому +4

    The story was so gross and awesome 😂

  • @EmTreasure88
    @EmTreasure88 6 років тому +1

    Lol, I'm watching this to catch up in health class while I'm sick and feeling nauseous. But don't worry, I didn't barf.

  • @exactscallion7
    @exactscallion7 8 років тому +3

    You are amazing. the way you explain is seriously super cool.