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
It also adds another poetic layer when you remember that are bodies are made of the remains of exploded stars. (Look up Crash Course Astronomy for that info).
You’re telling me that I wasn’t the sperm that won the race? I merely entered because the fastest sperms broke down the walls for me to get in? No wonder why I’m a failure
@@ahmed7874 He is neither smart nor cheated the system, as that is how the system works for everyone, and so the system is working as intended, he is not smart either because their was countless other rushing behind doing the same if he did not make it. So if anything he is the lucky survivor that made it pass the near countless obstacle in the way.
I love CrashCourse's take on explaining sex. If only this was around when I was in school. Oh well, it is now! My one constructive criticism is that I would have liked to see a plug for Sexplanations in the beginning when Hank talked about all the things they WOULDN'T be taking about. Other than that, excellent job!
+Daniel Gwillim Interesting. I guess it has always been the way one increases fake maturity. That is bashing another for finding something funny. That ever present human trait of elevating yourself above another by judgment, and hoping others do the same.
LOL @ 3:59 Flight of the Valkyries should have been played through the whole video, that would have been hilarious! ...though people probably would have taken it less seriously.
And your comment reminds me of when Dr Manhattan fought in Vietnam in Watchmen, Ferdie. Coincidentally, he nearly always had his sex organs out the entire time
5:55 Correct me if you should, but my teacher told me that the sperm's mitochondria don't enter the ovum, with the fact in mind that mitochondrial DNA is maternal. So is the animation wrong or my teacher?
Again, thank you for talking about the science of sex. There are any number of great sex ed/sexual behavior channels, but none that I've found, Sexplanations included, that give any indepth information as to what's happening biologically. And I think it's of utmost importance for us as biological beings to know and understand this material even before getting into the behavioral and physiological parts of the equation. Don't get me wrong, Sexplanations is great, but I regularly find myself saying, "yeah, but you didn't actually tell me anything. Certainly not anything about the physiology of (sexy whatever topic).” So, yes, thank you CrashCourse for getting to the real nitty gritty of what we do in the bedroom in a way that no one else is talking about. :D
+Dan Mac The morning after pill works by delaying ovulation, so that the sperm and egg don't get a chance to meet. It can also interfere with a fertilized egg's ability to attach to the uterine lining, but it's most effective if ovulation hasn't happened yet and it can delay it. (It can also make the menstrual cycle a little wonky for this reason.) -Nicole
Gosh! I really need to give sperm cells more credit. Sure the female reproductive system does most of the work but the sperm cells do have to woe the heart of a egg (metaphorically speaking) and that's almost as hard as wooing the woman.
Thanks!! im now ready for my practical exam! i've been watching this channel since last year from my psychology class to my now A&P classes. A big help you are!
"We're gonna look at what exactly is going on in your body before during and after sex in the most very safe for work clinical terms possible" 1:27 👀 😂
I feel like we should have sperm appreciation day where we just pay homage to the brave and enduring little sperm cells that made that perilous journey and brought us all into the world. Thanks, little guys.
I believe the IUD does more than prevent implantation, I may have heard wrong but I remember hearing that it also prevents fertilization. I remember hearing this because they also stated that they aren't sure of the mechanism involved.
+BiPaganMan It depends on the kind of IUD - hormonal IUDs are sort of like a 1-2 combo of the pill and an IUD in terms of how they work. Good, quick overview of this and other contraception methods in the +sexplanations episode on Pregnancy Prevention: ua-cam.com/video/xf1KlQ-Pdvg/v-deo.html -Nicole
+Fighting_Hussar Given our societal norms that tend to downplay the role of sex in life (and in some cases actively look down upon talking about it), it is easy to see how you come to feel that way, yes.
Wow, I'm 49 years old, have had a baby and I learned something today. I've never had the final process of fertilization explained before. I knew the egg had some way of keeping out other sperm but didn't know the exact mechanics.
Please try to keep the font size a little bit bigger in the comment boxes. Smaller and fancy fonts becomes blurry @240p, please try to increase the font size a little bit more. Thanks. Keep up the good work. :)
"Millions of hopeful sperms head into the female vagina, and this journey isn't for the faint of heart. But most of them never reach an oocyte." *Epic music plays* "Most of them go the wrong way" Involuntarily burst out laughing at that xD
Anyone cramming so hard for a bio test that they increase the playback speed to 2x so you can watch more videos and get information faster. Okay maybe just me. 😊
I like how he says "after weeks of talking about our reproductive parts". Mate, not a person here has been preparing for an exam weeks in advance - I've got two days to learn a semester, let's not pretend this is the place for the early bird!
Okay, probably a stupid question, but is it at all possible for two sperm to reach sperm receptors simultaneously? If so, what would happen? Would one of their nuclei be wasted? Or would both be used? If so, what would that do to the child?
+Roberta Tallienne this situation is known as Polyspermy. It does not result in twins, but in a triploid (3x each chromosome) zygote which would be inviable. The development from zygote to embryo to baby is a delicate dance of cell organisation mediated by proteins which themselves come from genes: having triploid DNA would result in overproduction of these proteins, ruining this balance.
So... what if it were carried to term? Are we looking at extra limbs? Or is it simply unsurvivable? Also, isn't Down's Syndrome something to do with extra chromosomes? How does that work? And what causes hermaphroditism?
My understanding is that IUDs primarily prevent fertilisation by creating a microenvironment that is hostile to sperm and ova, so that they can't actually meet. Is that only for the copper IUD?
One thing I still don't understand even after finish studying A & P. How come the Zygote does not exhibit any cellular or DNA damage usually exist in adult cells, from which they are manufactured from? Essentially turning back the clock & become a newborn cell again.
I know that this has absolutely no relevance to the topic at all, but I can't help but be distracted by how much Hank is moving that desk or table. Like, my eyes keep getting drawn to that sloshing blue liquid.
+andre andes ALMOST THERE! One more episode on reproduction and then the final four episodes all deal with the immune system. Patience, friend! It's almost time! -Nicole
How did I not learn this before now? Sperm dig little tunnels? Why on earth wasn't I taught that!!!?? I've possibly just learned more than I've ever learned about this since the "birds and the bees" talk. (Not counting the stuff I learned from the people on my bus in grade six. I learned many words from them)
"If I gesticulate enough then I can keep rabbitting on at 600 words per minute and they'll still get the message." Thanks though; in every other respect these videos are exceptionally helpful.
The ovum is not released into the uterus but in the fallopian tube and later the zygote travels down to the uterus for implantation.....in case of ectopic pregnancy which most commonly occurs in fallopian tube is due to inability of the zygote to descend down to the uterus.
I have a question. What is sexual arousal or orgasm in the psychological sense? I don't mean the technical terms that arousal is when the penis gets hard or orgasm is when the penis ejaculates, I mean what actually goes inside the mind personally when these things happen?
![Lp. Сердце Вселенной #60 РОЖДЕНИЕ ЛОЛОЛОШКИ [Финал] • Майнкрафт](http://i.ytimg.com/vi/YoR0pAV9FVQ/mqdefault.jpg)
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
Pis my sexy plis aaaaaaaa
"We'll do this as SFW as possible."
1 minute in: "*very suggestively moving people*"
we're gonna keep as sfw as possible *inserts loud sex noises*
rolled my eyes at that
Universal LITERALLY
I know. I died.
Wats sfw
It's actually pretty amazing how much can go wrong before an egg is even fertilized, and yet here we all are!
+sune olivier Hence the male's biological tactics, even with just one partner, is "shotgun alpha strike".
My biology teacher used to say each of us is a mini miracle.
now think about how many more us aren't here tho..
@@luismendoza1972 deep...
It also adds another poetic layer when you remember that are bodies are made of the remains of exploded stars. (Look up Crash Course Astronomy for that info).
You’re telling me that I wasn’t the sperm that won the race? I merely entered because the fastest sperms broke down the walls for me to get in? No wonder why I’m a failure
Hahaha
@@ahmed7874 He is neither smart nor cheated the system, as that is how the system works for everyone, and so the system is working as intended, he is not smart either because their was countless other rushing behind doing the same if he did not make it. So if anything he is the lucky survivor that made it pass the near countless obstacle in the way.
Haigo Li shut up loser
Lewis Quish In a way you're less of a failure, and more of a diamond in the rough that was found during an earthquake. So you're pretty lucky. 😊
@@yansakuya1 You are such a buzz kill
"the sex" *saxophone music * 😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂
That was hysterical everytime
THIS WAS THE COMMENTARY I WAS LOOKING FOR😂😂😂😂
LMAO 🤣
Hee haw
I love CrashCourse's take on explaining sex. If only this was around when I was in school. Oh well, it is now! My one constructive criticism is that I would have liked to see a plug for Sexplanations in the beginning when Hank talked about all the things they WOULDN'T be taking about. Other than that, excellent job!
OH GOD, THAT FLIGHT OF THE VALKEIRIE!!! LMAO!! Trying to be mature and absorb the information, but holy ........ that was hilarious.
+procrastinator99 I loved that too!
I KNOW RIGHT?!?!? I TRIED MAN, BUT I FAILED AS SOON AS I HEARD IT. XD
I bet the animators couldn't keep a straight face when making the video assets or animating them.
I had no idea fertilization was so complicated. This is actually quite interesting once you get past the awkwardness.
6:33 lol I love the 3 sperm sitting right outside the egg, like they're jealously thinking: "Damnit, that should be US in there!!!!" 😂
Ahahaha, the music at 4:06, love this series, definitely helping me prepare for the exam! Thanks!
Were the moans really necessary ?! oO
Yes
Someone is afraid of people thinking he's watching porn while also listening to CrashCourse hehe
lol it was hillarious
YES YES YES YES... YES!!!!
The sound effects and animations are what make crash course so good.
i have already learnt all this 2 years ago, but idk, its just really amusing to watch Hank talk about The Sex XD
Are you 12
+Your Consciousness really? is this the best u could do? haha try harder.
+MSadamgasm I dunno man, things like "The Sex XD" don't ooze maturity
+Daniel Gwillim i was just repeating what Hank said xD but it is amusing cuz its not everyday u hear Hank talk about The Sex.
+Daniel Gwillim Interesting. I guess it has always been the way one increases fake maturity. That is bashing another for finding something funny. That ever present human trait of elevating yourself above another by judgment, and hoping others do the same.
LOL @ 3:59 Flight of the Valkyries should have been played through the whole video, that would have been hilarious! ...though people probably would have taken it less seriously.
Made me chuckle. Great music for the context
+Gabriel Mentasti I laughed out loud when I heard it, the first thing I thought was "INVADE POLAND!!!"
+Finite Atticus I LOLed too. It reminded me of that scene in "Apocalyse Now" as the helicopters attack a village.
+Finite Atticus It makes me laugh. First thing I thought is: "INVADE EVERYTHING"
And your comment reminds me of when Dr Manhattan fought in Vietnam in Watchmen, Ferdie. Coincidentally, he nearly always had his sex organs out the entire time
Very informative. Reminds me of the miracle of life. Thanks Hank and CC!
It'd be awesome if CC could do a video on how the different types of twins are formed as well as how chimeras happen. :D
Idea for a birthday cake: Congratulations on winning the race!
He may talk fast but he keeps your attention!
5:55 Correct me if you should, but my teacher told me that the sperm's mitochondria don't enter the ovum, with the fact in mind that mitochondrial DNA is maternal. So is the animation wrong or my teacher?
5:40 We're all here because we were that lucky sperm that broke through!
+Steven Manning Born winners.
+Steven Manning Funnily enough, describing it like that actually undercuts how lucky we actually are.
Thank you so much for your videos! They have helped me pass biology throughout school!
7:01 him saying “lots of sex and babies” makes me so weirdly happy hahah
Again, thank you for talking about the science of sex. There are any number of great sex ed/sexual behavior channels, but none that I've found, Sexplanations included, that give any indepth information as to what's happening biologically. And I think it's of utmost importance for us as biological beings to know and understand this material even before getting into the behavioral and physiological parts of the equation.
Don't get me wrong, Sexplanations is great, but I regularly find myself saying, "yeah, but you didn't actually tell me anything. Certainly not anything about the physiology of (sexy whatever topic).”
So, yes, thank you CrashCourse for getting to the real nitty gritty of what we do in the bedroom in a way that no one else is talking about. :D
Thank you for all that information, i was wondering how emergency contraception works in that phase though. How does the morning after pill work?
+Dan Mac The morning after pill works by delaying ovulation, so that the sperm and egg don't get a chance to meet. It can also interfere with a fertilized egg's ability to attach to the uterine lining, but it's most effective if ovulation hasn't happened yet and it can delay it. (It can also make the menstrual cycle a little wonky for this reason.)
-Nicole
+CrashCourse thank you so much for this extra information
+CrashCourse if only this was explained clearly in school or at least in the pill's inserts. Crash course love forever
sadly this gave me more information in ten minutes then my health class in 8th grade did in four weeks... It also made more sense as well
Gosh! I really need to give sperm cells more credit. Sure the female reproductive system does most of the work but the sperm cells do have to woe the heart of a egg (metaphorically speaking) and that's almost as hard as wooing the woman.
*an egg
3:57 LOL THAT SONG
how tf did sex become the next hunger games?!? 😂😂
Hunger Games was the next sex you mean
this was the most entertaining crash course video
Thanks!! im now ready for my practical exam! i've been watching this channel since last year from my psychology class to my now A&P classes. A big help you are!
So many people need to watch this...
love this channel your voice is so soothing
Thank you, Hank. Doing a good job here, kiddo.
boy am i glad to find that crash course has a video on emrbryology
I laughed when he said "The Sex", spat coffee everywhere
"We're gonna look at what exactly is going on in your body before during and after sex in the most very safe for work clinical terms possible"
1:27 👀 😂
I feel like we should have sperm appreciation day where we just pay homage to the brave and enduring little sperm cells that made that perilous journey and brought us all into the world. Thanks, little guys.
Wow! It's published four days before my birthday!
Not me. I hatched out of an egg
The blue water on the desk is really rocking back and forth
This video should played in every health class😂
I believe the IUD does more than prevent implantation, I may have heard wrong but I remember hearing that it also prevents fertilization. I remember hearing this because they also stated that they aren't sure of the mechanism involved.
+BiPaganMan It depends on the kind of IUD - hormonal IUDs are sort of like a 1-2 combo of the pill and an IUD in terms of how they work. Good, quick overview of this and other contraception methods in the +sexplanations episode on Pregnancy Prevention: ua-cam.com/video/xf1KlQ-Pdvg/v-deo.html
-Nicole
Thank you very much sir and to the whole team, you thought me way more better than my Proctor did. ❤
1:28 why cant my professors put this in their lecture slides?
that iconic opening theme will always be ringing in my ears
What he said: "This takes a really long time to talk about."
What he meant: John, please help me.
Aside from the fact he adds "The" to Sex
The Saxophone 😂😂😂😂
And the star wars music omg😂I'm crying
hank rocks... such a great series of videos... thanks for getting me through A&P
The problem with this vid is it makes conception sound harder than it really is. Use protection folks. Trust me.
Nurses here to support hank we ❤️your lectures!!!
good thing I didn't take your word on the whole "totally safe for work" thing. Those sex noises were pretty loud.
Love that me and my baby just waited till everybody else was tired trying to get inside the egg and was like alright I guess I’ll just try now 😂
So... Sex and fertilization is episode 42... So now we know that the bees and the birds are actually the meaning of life! Yay!
CrashCourse + KaplanVideos = easy and best medical student life
this channel never disappoints me
best youtube channel everrrrrrrr! and i really mean it, its the best! Thank you! i can litterally pay for this channel
They really crammed a huge amount of info into a tiny space of time in this! 😉
1:28... it's... well....
+Fighting_Hussar It's a part of life, yes. :)
I know that but well hearing it and being the or with the person doing it is disturbing xD
+Fighting_Hussar Given our societal norms that tend to downplay the role of sex in life (and in some cases actively look down upon talking about it), it is easy to see how you come to feel that way, yes.
I like trains
OMG NOOO D:
**BOOM**
Wow, I'm 49 years old, have had a baby and I learned something today. I've never had the final process of fertilization explained before. I knew the egg had some way of keeping out other sperm but didn't know the exact mechanics.
Tessa T you are 51 or 52 now
Thanks for school work
we watched this in science class! great video! !! xx
Please try to keep the font size a little bit bigger in the comment boxes. Smaller and fancy fonts becomes blurry @240p, please try to increase the font size a little bit more. Thanks. Keep up the good work. :)
"Millions of hopeful sperms head into the female vagina, and this journey isn't for the faint of heart. But most of them never reach an oocyte."
*Epic music plays*
"Most of them go the wrong way"
Involuntarily burst out laughing at that xD
You should totally have linked to +sexplanations for more and in-depth information!
Anyone cramming so hard for a bio test that they increase the playback speed to 2x so you can watch more videos and get information faster. Okay maybe just me. 😊
I forgot to use an ear piece when I watch this 😱
I like how he says "after weeks of talking about our reproductive parts". Mate, not a person here has been preparing for an exam weeks in advance - I've got two days to learn a semester, let's not pretend this is the place for the early bird!
Thank you SciShow for showing the internet that the first sperm to get to the egg just works hard for the next guy's entry path.
I like how if you search crash course the first VIDEO to turn up is this one
Okay, probably a stupid question, but is it at all possible for two sperm to reach sperm receptors simultaneously? If so, what would happen? Would one of their nuclei be wasted? Or would both be used? If so, what would that do to the child?
Then you get twins.
What? No you don't. Twins happen when either two eggs are fertilized successfully, or one zygote splits in two.
+Matthew Song Uhh I thought, Twins is 2 eggs that have been released at the same time or identical is when the zygote splits into 2 early on
+Roberta Tallienne this situation is known as Polyspermy. It does not result in twins, but in a triploid (3x each chromosome) zygote which would be inviable. The development from zygote to embryo to baby is a delicate dance of cell organisation mediated by proteins which themselves come from genes: having triploid DNA would result in overproduction of these proteins, ruining this balance.
So... what if it were carried to term? Are we looking at extra limbs? Or is it simply unsurvivable? Also, isn't Down's Syndrome something to do with extra chromosomes? How does that work? And what causes hermaphroditism?
My understanding is that IUDs primarily prevent fertilisation by creating a microenvironment that is hostile to sperm and ova, so that they can't actually meet. Is that only for the copper IUD?
At 6:27 why does it look like there are TWO polar bodies?
starts singing "let's talk about sex"
One thing I still don't understand even after finish studying A & P. How come the Zygote does not exhibit any cellular or DNA damage usually exist in adult cells, from which they are manufactured from? Essentially turning back the clock & become a newborn cell again.
got a good grade on my test :)
I know that this has absolutely no relevance to the topic at all, but I can't help but be distracted by how much Hank is moving that desk or table. Like, my eyes keep getting drawn to that sloshing blue liquid.
You are amazing! thnk you! -philippines
When will this end? I want the immune system!!!!
+andre andes ALMOST THERE! One more episode on reproduction and then the final four episodes all deal with the immune system. Patience, friend! It's almost time!
-Nicole
+CrashCourse Thanks Nicole. Wait only one episode. On the Immune System. I guess there is not a lot to talk about it
+CrashCourse Yes! The immune system!!!!
+CrashCourse I don't see the fourth part
MMA king Its come out this Tuesday hopefully.
You call this a Crash Course video? You didn't use the word 'skoodilypooping' even ONCE!
or except for sponges
Here's a bit of fun. Go open that video of the loop of the Baker Street Sax Solo and play it while watching this video.
This never ends
How did I not learn this before now? Sperm dig little tunnels? Why on earth wasn't I taught that!!!?? I've possibly just learned more than I've ever learned about this since the "birds and the bees" talk.
(Not counting the stuff I learned from the people on my bus in grade six. I learned many words from them)
Hank left me intrigued . Now I want more 😊
lol few videos ago heard mr. green say"take months to cover this", 2 hours later i got my sexy anatomical talk down..
hi, where is the angler fish toy from?
I need a crash course literature on One Flew Over The Cuckoo's Nest
"If I gesticulate enough then I can keep rabbitting on at 600 words per minute and they'll still get the message."
Thanks though; in every other respect these videos are exceptionally helpful.
It looks like you need to replace that molecular model on your desk with a Snatom version. Derek would appreciate it.
thought cafe has become naughty thought cafe lol
That makes me angry. >:-(
im learning about this in class right now cool this will help me study ^.^
Why are the props shaking? Is there action happening under the table?
its just his arms moving
My finals for biology is tomorrow. Too bad Crash Course A&P still hasn't finished yet... :(
I'll still watch this series tho
The ovum is not released into the uterus but in the fallopian tube and later the zygote travels down to the uterus for implantation.....in case of ectopic pregnancy which most commonly occurs in fallopian tube is due to inability of the zygote to descend down to the uterus.
Will there be an episode on Fertility Awareness Methods?
After the placenta develops and decreases HCG secretion, does the corpus luteum then degrade?
I have a question. What is sexual arousal or orgasm in the psychological sense? I don't mean the technical terms that arousal is when the penis gets hard or orgasm is when the penis ejaculates, I mean what actually goes inside the mind personally when these things happen?
Scientists: Resolution Phase
Single Guys: Post-Nut Clarity
I need crash course Physics!
This is one interesting video. I know he's funny but he pretty much explains it. Omg I've Bern watching crash course for my global history classes