The Reproductive System: How Gonads Go - CrashCourse Biology #34

Hank lets us in on the meaning of life, at least from a biological perspective - it's reproduction, which answers the essential question of all organisms: how do I make more of myself? So, sex, how does it work?

Table of Contents
1) Gametes: Ova and Sperm 2:27
2) Sex Determination 4:59
3) Secondary Sexual Characteristics 6:48
4) Female Reproductive Structures 7:25
a) Uterus & Oviducts 7:40
b) Endometrium (Menstruation) 7:57
c) Cervix & Vagina 8:32
5) Male Reproductive Structures 8:45
a) Scrotum, Sminferous Tubules & Epididymas 8:59
b) Penis 9:37
c) Vas Deferens to Eurethra (Emission) 10:13

References
Campbell Biology, 9th ed.

Want to find Crash Course elsewhere on the internet?

[lindseyleighbee]

I was failing college biology and no tutoring helped me. There were so many terms and complicated processes that I couldn't grasp no matter how many times they were repeated. I decided to give Crash Course Biology a try... I got A's and B's on the tests ever since. I showed the videos to my peers and they all agreed that it was more helpful than the professor's lectures. Thanks Hank! :) 

[syddlinden]

EVERYONE NEEDS TO WATCH THIS VIDEO!
Seriously, too many people are ignorant of how basic biology, reproduction, development, everything works. So much of life makes sense once you bring it back to basics. Way to go Crash Course for trying to educate the masses! Thank you!

[crazimuch]

I used these to study for my Biology final.
I passed my biology final.
Thank you, Hank.

[merlijne]

Who else is watching this because they have a biology test tomorrow bc same

[BecauseJustBecause]

Thank you for telling me in 11 minutes what my teachers couldn't do properly in 3 years. (I'm 15.) There is nothing embarrassing about this, yet every teacher has made it unbearable and slow and confusing and embarrassing. This summed up everything I've learned during three years in 11 minutes, and it was great.
Thank you Hank, and crashcourse, for being so awesome.

[skoar]

EDIT: fertilization happens in Fallopian tubes and is transported down w/ cilia to the endometrium where implantation occurs Hank. That's why ectopic pregnancies (pregnancies that aren't in the uterus) can occur in the tubes or even outside the reproductive system if the cell misses the tube and sperm still reaches it.

[dtm]

Excellent job. Great personality. Showed in my 7th grade health classes and the kids took it well.

[MikeTrance]

The fertilization does not take place in the uterus, but in the fallopian tube (the ampulla)

[yoboifolife]

I died when he explained nipples. Just the slow and obvious realization on how pointless they are for males

[nolandscott]

Cheers on keeping a straight face through the whole video, Hank.

[yinyang]

i am Engineering student and my 12th class i took computer science, this guy explaining so well that we can understand once we listen to it, i am watching 6 crash courses here, big thanks sir, but i can't help you now

[exploreyourweb]

Great video, I have my final exam tomorrow and this video has helped me greatly. Love the reference about having to 'brush your teeth'. ANOTHER AWESOME VIDEO FROM CRASHCOURSE. Thank you.

[sanne]

He forgot to button the 4th button down on his shirt... it's bothering me

[spidermanandsnape]

This is better than anything I ever learned in school. I understand it, there wasn't any stupid giggling or awkward moments, etc.

[sheenapolman]

I am going to pass by Bio 12 final because of Crash Course

[PhineasPhishUK]

How is it that you guy have literally made every video in tandem with my AS and A2 Biology courses?
It's almost too perfect!

[rainywoex]

Hank: "And  ... BAM!! Erection."

[ntltxfi]

Cells: *let's reproduce*
Humans: *evolves through thousands of years*
Homosexuals: *becomes 10% of people*
Cells:

[lilgregora]

i wish i knew about this channel when i was in AP of made my life SO MUCH

[breadpilled]

"Genitals are only ONE byproduct of a much, much more important and fundamental distinction."

AAAAND that is where us transgender people come from. Chromosomes, hormones and genitals aren't the full picture, people. It's super complicated and not totally understood yet.