The Digestive System: CrashCourse Biology #28

Hank takes us through the bowels of the human digestive system and explains why it's all about surface area.

Table of Contents
1) Surface Area to the Max! 3:21
2) Mouth to Esophagus 5:23
3) Stomach 6:38
4) Small Intestine 7:55
5) Large Intestine 9:44

References
Campbell Biology, 9th ed.

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[JustME-rwyo]

This is literally everything i've been learning in bio class. all the days and weeks of work it all summed up in one 11 minute video

[simahariri]

can i have your brain for my science exam?

[zintlejoko]

who's here trying to self study during quarantine?

me only? okay

[cammyoungblood]

Crash Course has totally saved my life. Without this episode I would've totally failed my Food and Nutrition (Biology) test. THANK YOU HANK GREEN! (By the way, you guys should start a Physics series. It would help me and many other Nerdfighters).

[msHARRYjudd]

Why am I paying $18k a year for my degree when all of my course material is on CrashCourse or SciShow...?

[ericwilliams]

This is a very informative introduction to the digestive system, but I see people asking why they should pay a college when they can just watch this. This is meant as an introduction, I am in nursing school and we are covering the digestive system currently and it has taken us 4 weeks of lab and class to cover the basic's of the digestive system. This is working with cadavers and multiple instructors. But I hope a person wouldn't see this and think they know better then a nurse or doctor. There is a whole lot of other stuff going on in your body while you are eating that hot pocket.

[jesscuddy]

Hank is honestly a better teacher than my biology teacher. Thank you for making biology interesting and helping me pass.

[logankeller]

*Goes and eats a piece of bread to see if it actually gets sweeter*

[nynytruong]

"Prepping your poo for its great entrance into the world" "And, you know... Out in the world to live its own life". I literally died

[joescott]

"2 cups of coffee and a bran muffin"
NICE So I Married an Axe Murderer reference. Kudos, sir.

[calayatan]

"you are probably a human, we dont assume anything" feel like laughing!!!!

[isaacrobinson]

9:39 is wrong, the bile from the liver doesn't break up the fats into gatt acids and glycerol, it simply separates it into smaller globs. It's the pancreatic lipase that actually breakdown the fat molecules.

[HolyGoucky]

I studied the topic in my biology class, but when Hank does it.. Its just makes the whole topic so much more interesting. Awesome work!

[patrickjohnson]

I really enjoyed this video. Very informative and entertaining. Smart and funny. Great combination! Thank you for creating and sharing it

[DarkBlueNutrition]

Amazing video... definitely binging more of your videos on the digestive system... Seriously, I LOVE how you break everything down without dumb-ing it down, get straight to the key points AND add a little humor. It's the perfect formula for keeping my short attention span lol.

[michaelgw]

Green screen, veggies, a hot pocket, a milkshake, and ALL the biology knowledge... everything I need in a video

[thomasbybjergbrock]

I think he keeps a nice pace, keeps it interesting.
And if you need more time to absorb it you can always pause/rewind. Speeding it up however is not an option, so keep the tempo Hank :)

[sabrinagilberttt]

I've been binging this series at 2x speed for my bio final in 8 hours I really hope I remember some of it

[alexisraquelle]

My mind was blown when he said amylase is the reason why the longer you chew bread the sweeter it tastes. I never really noticed until he said it 😂😂

[emmawallisch]

when i noticed that his shirt was black and the same color as the background all i could picture was his head floating bc it looks like it is