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!
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?
+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
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
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.
+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
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!
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: ruclips.net/video/xf1KlQ-Pdvg/видео.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.
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.
"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 👀 😂
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?
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. :)
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. 😊
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.
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!
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.
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.
"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.
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)
Why go into disruption now but not in any other video? Some people are interested in preventing the absorption of nutrients: stomach stapling, bulimia, liposuction, etc. Others go for cosmetic procedures to alter their skin. Up till now the course has focused on how things function normally without any artificial interference.
+aperson22222 I'm guessing, because the disruptions mentioned in this video are used by a faaaar larger proportion of the population than the ones you mention?
TheHue's SciTech Not sure why that should matter. The principle holds true. And I could probably think of something else that "everyone" does that was overlooked.
aperson22222 How about this: many people are denied education about these things because of parents and teachers who are embarrassed (or worse.) It's beneficial to those who are thereby denied the information.
TheHue's SciTech I forget how young the Crash Course audience is sometimes. Thing is, when you're working with that population, it's extremely important to bite down on the temptation to presume that you know better than the parents, that you therefore have both the right and the duty to cover the "deficiencies" of poor parenting by contradicting them in front of their kids. Even if we assume that you do indeed know better (which is never certain), all you've really done is stirred up trouble that you yourself will not have to deal with. Very irresponsible. Now there are cases where the parenting is so terrible that outside agents need to step in. These cases are not even all that rare, sadly. But it's up licensed professionals with MSWs to make those calls, with the full support of the legal system, the understanding that the answer to "Is this the hill you want to die on?" need not be "Yes, of course!" and, most importantly, a willingness to take responsibility for the long-term effects of what they're doing.
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?
Interesting that we still rely on Masters and Johnson's decades-old research when talking about sexual response. Has anyone else fallowed up on their studies?
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.
"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
No wonder we are having trouble getting pregnant! All of these things have to align just right at a specific time to conceive! It is far more complex than I thought, makes me feel a little better about not getting pregnant right away.
I have a question (and no it's not about sex), why would the white blood cells devour the sperm? It isn't any kind bad germ for the body so why would it try to stop what the body wants to happen?
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!
I had no idea fertilization was so complicated. This is actually quite interesting once you get past the awkwardness.
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.
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!!!!" 😂
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.
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?
Ahahaha, the music at 4:06, love this series, definitely helping me prepare for the exam! Thanks!
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.
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
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
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
He may talk fast but he keeps your attention!
Very informative. Reminds me of the miracle of life. Thanks Hank and CC!
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
Thank you so much for your videos! They have helped me pass biology throughout school!
Idea for a birthday cake: Congratulations on winning the race!
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
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
7:01 him saying “lots of sex and babies” makes me so weirdly happy hahah
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.
So many people need to watch this...
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!
this was the most entertaining crash course video
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: ruclips.net/video/xf1KlQ-Pdvg/видео.html
-Nicole
how tf did sex become the next hunger games?!? 😂😂
Hunger Games was the next sex you mean
3:57 LOL THAT SONG
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**
boy am i glad to find that crash course has a video on emrbryology
Thank you, Hank. Doing a good job here, kiddo.
What he said: "This takes a really long time to talk about."
What he meant: John, please help me.
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.
love this channel your voice is so soothing
"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 👀 😂
Nurses here to support hank we ❤️your lectures!!!
I laughed when he said "The Sex", spat coffee everywhere
CrashCourse + KaplanVideos = easy and best medical student life
This video should played in every health class😂
hank rocks... such a great series of videos... thanks for getting me through A&P
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?
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. :)
good thing I didn't take your word on the whole "totally safe for work" thing. Those sex noises were pretty loud.
Wow! It's published four days before my birthday!
The problem with this vid is it makes conception sound harder than it really is. Use protection folks. Trust me.
1:28 why cant my professors put this in their lecture slides?
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. 😊
The blue water on the desk is really rocking back and forth
You should totally have linked to +sexplanations for more and in-depth information!
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
Thank you very much sir and to the whole team, you thought me way more better than my Proctor did. ❤
Thanks for school work
that iconic opening theme will always be ringing in my ears
best youtube channel everrrrrrrr! and i really mean it, its the best! Thank you! i can litterally pay for this channel
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!
this channel never disappoints me
So... Sex and fertilization is episode 42... So now we know that the bees and the birds are actually the meaning of life! Yay!
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.
They really crammed a huge amount of info into a tiny space of time in this! 😉
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?
Aside from the fact he adds "The" to Sex
The Saxophone 😂😂😂😂
And the star wars music omg😂I'm crying
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.
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.
we watched this in science class! great video! !! xx
"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.
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)
starts singing "let's talk about sex"
This never ends
You are amazing! thnk you! -philippines
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.
I forgot to use an ear piece when I watch this 😱
Why go into disruption now but not in any other video? Some people are interested in preventing the absorption of nutrients: stomach stapling, bulimia, liposuction, etc. Others go for cosmetic procedures to alter their skin. Up till now the course has focused on how things function normally without any artificial interference.
+aperson22222 I'm guessing, because the disruptions mentioned in this video are used by a faaaar larger proportion of the population than the ones you mention?
TheHue's SciTech Not sure why that should matter. The principle holds true. And I could probably think of something else that "everyone" does that was overlooked.
*****
I'd think that would motivate you to give the topic an even wider berth.
aperson22222 How about this: many people are denied education about these things because of parents and teachers who are embarrassed (or worse.) It's beneficial to those who are thereby denied the information.
TheHue's SciTech I forget how young the Crash Course audience is sometimes.
Thing is, when you're working with that population, it's extremely important to bite down on the temptation to presume that you know better than the parents, that you therefore have both the right and the duty to cover the "deficiencies" of poor parenting by contradicting them in front of their kids. Even if we assume that you do indeed know better (which is never certain), all you've really done is stirred up trouble that you yourself will not have to deal with. Very irresponsible.
Now there are cases where the parenting is so terrible that outside agents need to step in. These cases are not even all that rare, sadly. But it's up licensed professionals with MSWs to make those calls, with the full support of the legal system, the understanding that the answer to "Is this the hill you want to die on?" need not be "Yes, of course!" and, most importantly, a willingness to take responsibility for the long-term effects of what they're doing.
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 😂
Hank left me intrigued . Now I want more 😊
Scientists: Resolution Phase
Single Guys: Post-Nut Clarity
got a good grade on my test :)
Not me. I hatched out of an egg
I like how if you search crash course the first VIDEO to turn up is this one
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?
im learning about this in class right now cool this will help me study ^.^
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
Interesting that we still rely on Masters and Johnson's decades-old research when talking about sexual response. Has anyone else fallowed up on their studies?
My finals for biology is tomorrow. Too bad Crash Course A&P still hasn't finished yet... :(
I'll still watch this series tho
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.
It looks like you need to replace that molecular model on your desk with a Snatom version. Derek would appreciate it.
After the placenta develops and decreases HCG secretion, does the corpus luteum then degrade?
I need a crash course literature on One Flew Over The Cuckoo's Nest
"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
I need crash course Physics!
No wonder we are having trouble getting pregnant! All of these things have to align just right at a specific time to conceive! It is far more complex than I thought, makes me feel a little better about not getting pregnant right away.
At 6:27 why does it look like there are TWO polar bodies?
Gwyneth Paltrow was the herb-shover at 7:28! (It WAS her, wasn't it, Crash Course?)
I have a question (and no it's not about sex), why would the white blood cells devour the sperm? It isn't any kind bad germ for the body so why would it try to stop what the body wants to happen?
lol few videos ago heard mr. green say"take months to cover this", 2 hours later i got my sexy anatomical talk down..
This video is eggcellent