Digestive System

Join the Amoeba Sisters for a brief tour through the human digestive system! This video will address major structures and functions including the esophagus, stomach, small intestine, and large intestine. This video also mentions chemical and mechanical digestion as well as some digestive vocabulary.

Table of Contents:
00:00 Intro
1:30 Ingestion, Digestion, Absorption, Elimination
2:06 Mouth
2:54 Esophagus
3:34 Stomach
4:36 Small Intestine
6:00 Large Intestine (Colon)
6:26 Elimination
6:53 Accessory Organs in Digestion
7:43 Disorders in Digestion
--------------------------------
REFERENCES on HUMAN DIGESTIVE SYSTEM:

Urry, Lisa A, et al. Campbell Biology. 11th ed., New York, Ny, Pearson Education, Inc, 2017.

--------------------------------
FURTHER READING SUGGESTIONS

On Platypus Digestive System:

On Venomous Spur in the Platypus:

We mention specialized cells can develop a mucus layer - and that they divide frequently - which can be protective for the stomach lining. However, there's more! Did you know many enzymes (like pepsin) are secreted in an inactive form and don't activate until reaching a different location? Learn more below!

Learn about Hormones Involved in Human Digestion:

Learn about Disorders of Human Digestive System:
--------------------------------

Our Resources:

Connect with us!

TIPS FOR VIEWING EDU YOUTUBE VIDEOS:

MUSIC:
Our intro music designed and performed by Jeremiah Cheshire.
End music in this video is listed free to use/no attribution required from the YouTube audio library.

COMMUNITY:
We take pride in our AWESOME community, and we welcome feedback and discussion. However, please remember that this is an education channel. See YouTube's community guidelines and how YouTube handles comments that are reported by the community. We also reserve the right to remove comments.

TRANSLATIONS:
Hindi Subtitles Credit: Alisha Aggarwal
Chinese Subtitles Credit: 字幕由Sharon Shanz Chan翻譯

[cam-hzcb]

I love how most of us are high school students that found this channel in bio class and now watch their videos in our free time

[antler]

And when the world needed them the most, they returned.

[MaxiLuca]

Still helping me in college level anatomy/physiology. Thank you Amoeba Sisters!

[youssifahmedfouda]

This is just one of the best science channels I have ever seen. The channel needs more subscribers, to be honest.

[zaakirahahmed]

Came here a few years ago to help with my science classes, still here after I graduated (high school) because I now have a genuine interest in science, and great love for your videos 🥺

[andjelatrkulja]

YouTube, please recommend this channel to more people and save them on the exams!

[sarahk.]

This channel has been carrying me through college microbiology, chemistry, and anatomy. You guys are a god send!!

[drshathamoh]

I’m a medical student now and still watching your videos since I was 10th grade!!! Thaaaank you 😍😍😍😍

[AmoebaSisters]

Expand this comment for clarifications! We think the points here are helpful. Please expand this comment:
1. A great question helped us see something we want to point out. We mention at 6:21 that the large intestine's *major role* is the re-absorption of precious water (as well as it being home to many beneficial bacteria). That is correct BUT we don't want to start a misconception that water doesn't also get absorbed in the small intestine - because it does there too. In fact, a larger percentage of water has already been absorbed by the small intestine by the time it gets to the large intestine. But the *major function* - as mentioned by the video - of the large intestine is reabsorbing precious remaining water.

[Tamaraaudeh]

i had to study all the material for my test in 2 days and these summarized videos really helped me you're doing a remarkable job!! thank you.

[elmomagicalworld]

Thank you Amoeba Sisters. I am currently working on a digestive system project in which I have to make a piece of food travel through he digestive tract. Watching this video really helped me understand which directions to take. I love how you included even the tiniest details like the epiglottis and the chyme. I appreciate you a lot. Thanks again!!!

[ayaya]

Amoeba Sisters, I always watch and love your content of videos it makes my learning in science and biology easier!

[kj]

Never clicked so fast 😂 I love you Amoeba Sisters

[luciaxochimitl]

You have to add subtitles in spanish, I live in Mexico and students will go crazy for your adorable videos. They really help me understanding some concepts. Keep on the good work. Thanks.

[armageddon]

I managed to make it into college without taking a Biology class, which was probably a mistake. Now I have to take a Biology class when my last experience with Biology was in 7th grade. Luckily, your videos make it a lot easier to take in the material. Thank you! You're a life saver.

[estroberri]

I just recently overcame a few digestive issues that have been occurring for about a week. What a coincidence that this comes out as soon as I recover!

[anveshas]

I literally don't know why or how, but me and my brother only get science videos by the amoeba sisters!

Thanks you amoeba sisters for basically saving my grades!!!

[papuleabdulrahman]

I can't emphasize just how much i love this channel

[heyamiami]

mrs. rapini i appreciate u sm!! u taught bio to me freshman year at my high school (not sure if you want the name to be disclosed) and i’m so happy to see how far you’ve gone!!!! i’m in college now and i love seeing kids in hs bio bringing you up. you are a game changer

[elistervowelles]

Me: sees you made new video
Also me: the digestive system?! Yay!
I'm one of the few people who enjoy the digestive system