Digestive System, Part 1: Crash Course Anatomy & Physiology #33

Digestive System, Part 1: Crash Course Anatomy & Physiology #33

Nachos are delicious. And versatile because today they’re also going to help us learn a thing or two about your digestive system. Nachos can provide us with energy and raw materials, by first ingesting something nutritious, propelling it through the alimentary canal where it will be mechanically broken down, and chemically digested by enzymes until my cells can absorb their monomers and use them to make whatever they need. And eventually, there will be pooping.

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: https://apple.co/3d4eyZo
Download it here for Android Devices: https://bit.ly/2SrDulJ

Chapters:
Introduction: Why We Eat Food 00:00
Digestive System: Your Body’s Disassembly Line 2:18
Structure of the Digestive System 4:18
Ingestion 6:24
Propulsion 7:00
Mechanical Breakdown 7:38
Digestion 8:01
Absorption 8:30
Defecation 8:50
Review 9:50
Credits 10:27

***

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50 Comments

  1. Yoel_TF on May 24, 2022 at 9:09 pm

    😂😂 i laughed when he said “you’re a donut” 🤦🏻‍♂️😭



  2. wendy williams on May 24, 2022 at 9:10 pm

    Was that a Mr. Hankey?



  3. Tracy Johnson on May 24, 2022 at 9:14 pm

    This is fun to watch while eating



  4. Cemre on May 24, 2022 at 9:14 pm

    after all these explanations… im just wondering why i shouldnt be upside down



  5. GrassyYT on May 24, 2022 at 9:16 pm

    Dyi



  6. snk It on May 24, 2022 at 9:17 pm

    B26
    4:35
    6:01
    6:24
    6:45
    7:37
    8:11
    8:30
    8:50



  7. Christopher Watt on May 24, 2022 at 9:19 pm

    does anyone notice strong sad (from the Homestar-runner videos by the brothers Chapman) on his desk



  8. Scott Poor on May 24, 2022 at 9:21 pm

    Did anyone notice the jelly beans and eye balls that made there way onto the nachos > o <



  9. marz ismylife on May 24, 2022 at 9:22 pm

    soooooo i’ve been eating nachos… EVERY DAY ….for the last 3 weeks…. the canteen at school sells really good ones really cheep.. now i’m scared for my body.



  10. YoNoRush on May 24, 2022 at 9:22 pm

    Now I know how astronauts are able to eat! I’ve been asking myself "How does it go down if there’s no gravity????"



  11. Shael Strata on May 24, 2022 at 9:24 pm

    Going great until you mentioned "beef" & "cheese". Living with a humane diet, those don’t exist in my world, nor the enlightened plant based eating kids. Why do they always have to feature animal derivative foods in kid’s media? To normalize those "foods" so kids develop apathy towards the sources of those foods, such as taking kids to a petting zoo, where they adore the animals, then taking them to McDonald’s afterwards . They don’t make the connection.



  12. Jack kareem on May 24, 2022 at 9:24 pm

    amazing !



  13. James Parkinson on May 24, 2022 at 9:25 pm

    Perfect.



  14. Letter on May 24, 2022 at 9:25 pm

    I LIKE MILK



  15. Khadija Al hammadi on May 24, 2022 at 9:26 pm

    I hate COVID-19
    dude, I missed my friends



  16. Rachel Wood on May 24, 2022 at 9:27 pm

    Can anyone else not stop looking at that beautiful lateral knee x-ray in the background !!



  17. Johan Aludden on May 24, 2022 at 9:27 pm

    04:46



  18. Clashing All The Time on May 24, 2022 at 9:28 pm

    Both you and food are made of STUFF!!



  19. Jacob Lee on May 24, 2022 at 9:29 pm

    Hank: Picks up a nacho to eat it
    Also Hank: Puts the nacho down
    Me: Why?



  20. Boston Williams on May 24, 2022 at 9:30 pm

    Why is everybody talking about the donut part but not the christmas hat on the poops?



  21. Heidi on May 24, 2022 at 9:31 pm

    i want some nachos



  22. Nicholas Blomgren on May 24, 2022 at 9:31 pm

    Digestive System Crash Course
    A. Energy
    B. Raw materials
    Bonds
    Molecules, most basic forms
    Mechanically and chemically
    Speed up
    4 calories
    9 calories
    Gastrointestinal
    hollow
    Mouth, pharynx, esophagus, stomach,
    Teeth, tongue, pancreas
    Ingestion
    Propulsion
    Swallowing
    The smooth muscles of the walls of your digestive organs take turns contracting and relaxing to squeeze food through the cavity of the alimentary tract.
    Mechanical Breakdown
    Chemical Digestion
    Absorption
    Defecation
    Mouth



  23. CrashCourse on May 24, 2022 at 9:32 pm

    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: https://apple.co/3d4eyZo
    Download it here for Android Devices: https://bit.ly/2SrDulJ



  24. Rashmi Singh on May 24, 2022 at 9:33 pm

    ‘STUFF’!



  25. HealthFitnessPlanet on May 24, 2022 at 9:33 pm

    That’s why I use probiotics everyday



  26. Vanita Prajapati on May 24, 2022 at 9:37 pm

    Wht is the name of this amazing person who is teaching?? Please someone tell me



  27. Oro on May 24, 2022 at 9:38 pm

    “You’re a donut!”
    *Gordon Ramsay would like to know your location*



  28. gu…dont on May 24, 2022 at 9:39 pm

    Learning @ home gang lessgooo



  29. ToTheMooon! on May 24, 2022 at 9:42 pm

    Wow, never knew Ross from Game Grumps was such a smart guy.



  30. Kendall Lynette on May 24, 2022 at 9:43 pm

    i love the way he talks



  31. Isabel Rosenfeld on May 24, 2022 at 9:44 pm

    i was eating nachos



  32. Raquel Mayouhas on May 24, 2022 at 9:44 pm

    Ambush the mush. I love this video so much



  33. Maathai Ndobe on May 24, 2022 at 9:44 pm

    Your digestive tract is really just one unbroken insulated tube from outside, running through your body🤣



  34. Fernandito Mazariegos on May 24, 2022 at 9:44 pm

    outside like i ever been outside HAHAHAHAHAHAHAHAHHA



  35. Thais Amanda on May 24, 2022 at 9:46 pm

    Eu amo um canal <3



  36. enya on May 24, 2022 at 9:47 pm

    "you’re a donut"
    kakyoin: 👁👄👁



  37. ImSoSirius on May 24, 2022 at 9:53 pm

    See the donut, be the donut



  38. Jacob Lee on May 24, 2022 at 9:54 pm

    Hank: You can’t just inhale in the stuff you need for DNA or actin or a phospholipid bilayer
    Me: *Hold my coffee*



  39. Sophia Fern on May 24, 2022 at 9:55 pm

    This is basically my school during quarantine



  40. Clashing All The Time on May 24, 2022 at 9:56 pm

    You’re a donut!! 😂😂



  41. Pitsh*t on May 24, 2022 at 9:56 pm

    Ah yes, I’m legally identified as a donut



  42. SStudy Diary on May 24, 2022 at 9:58 pm

    wow



  43. Niall Nine2 on May 24, 2022 at 9:58 pm

    This is a great way to teach anatomy!



  44. 死变态sauce on May 24, 2022 at 9:59 pm

    i am a donut



  45. Solace Onumaegbu on May 24, 2022 at 10:02 pm

    9:12



  46. Rexcodydave Wins on May 24, 2022 at 10:03 pm

    Who else is here cause of online school because they couldn’t find quizlet for the answers



  47. Helen Kennedy on May 24, 2022 at 10:04 pm

    Are you guys selling the crash course coffee mugs anymore?



  48. Toni J Prieto on May 24, 2022 at 10:06 pm

    I like how your video are colorful and fun and makes me what to watch the video…..not to judge or make any offensive statement but you talk a lil to fast and I cant gather all the information



  49. HOTKAKES on May 24, 2022 at 10:07 pm

    4:29 Mr. Hankey has been spotted.



  50. Faizan Hussaini on May 24, 2022 at 10:07 pm

    whats persistalsis