Big Guns: The Muscular System - CrashCourse Biology #31

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  • Опубликовано: 24 янв 2025

Комментарии • 1,1 тыс.

  • @Spectolect
    @Spectolect 10 лет назад +566

    Major kudos to Amber, the head of graphics. A visual learner like me cannot thank her enough!

  • @Amandakaymtz
    @Amandakaymtz 8 лет назад +968

    how did people 20 years ago even pass their classes without youtube channels like this one?

    • @sabey5126
      @sabey5126 8 лет назад +9

      I've been researching into human anatomy and discovered a fantastic resource at Anatomy Blueprint Pro (check it out on google)

    • @zdbossz
      @zdbossz 8 лет назад +1

      Еxрlooоsivе musclее grоwth in a bоttle? Ditсh thе unhеalthу Рrе-wоrkout pоwdеrs. Mах yоur rеsults with this рroven to work musclе building Stасk! twitter.com/d925e3c45d857fb14/status/742668391975096320 Big Guns Thе МММusссculаr Sуstеm CrаshCourse Biоlоgу 31

    • @lalalalalala7849
      @lalalalalala7849 8 лет назад +25

      Amanda Martinez they cut up bodies for research

    • @unitechtherapyy1453
      @unitechtherapyy1453 8 лет назад +52

      they actually studied, maybe?

    • @arjanharjani3109
      @arjanharjani3109 8 лет назад +52

      I was able to learn about all the muscles and bones and everything else through pure reinforcement and practicing with my classmates- our books did not even have much color but we used our imagination and used the cadavers and ourselves to keep ahead of the curve. Med school was fun because we chose to be excited about what we learned and not pressured because of grades!

  • @gingergiggles
    @gingergiggles 9 лет назад +557

    God, this is so much easier than listening to a robot voice explain this. You make studying for my exams way more fun, dude.

  • @crashcourse
    @crashcourse  12 лет назад +140

    we are attempting to cover the topics that would be taught in a year long AP level Biology class, equivalent to a 101 level in a college or university. so it will be more complex than general high school biology.

  • @tamaraherman7073
    @tamaraherman7073 10 лет назад +147

    First of all, thank you so much. Second of all, for those who think he is talking too fast, you can go to your viewing settings and lower the speed- not only is it slower, but it's slightly hilarious.

    • @hptruefan
      @hptruefan 10 лет назад

      omg thanks xD

    • @ovemesojude7445
      @ovemesojude7445 10 лет назад

      hw pls?

    • @najeyrifai1134
      @najeyrifai1134 10 лет назад +5

      How it feels to watch Crash Course while stoned.

    • @daaaniphantom
      @daaaniphantom 9 лет назад

      Tamara Rostro I tried it. HAHAHAHA thank you so much for bringing this to my attention

    • @danielwong2395
      @danielwong2395 6 лет назад

      😁🤣🤣🤣🤣LOL

  • @crashcourse
    @crashcourse  12 лет назад +26

    Thanks. The animations for Biology are actually created entirely by our Creative Director, Amber Bushnell, with the help of a consulting biologist, Brandon Jackson. Thought Bubble does the animations for World History exclusively.

  • @joet5342
    @joet5342 10 лет назад +71

    Always astounded at how Hank and the team make science, especially complex anatomical functions, so accessible, when so many mind numbing videos on the internet bang on for hours with complex 'shit' for want of a better word.
    Of course science isn't 'easy', there'd be no fun if it were no challenge, but these people give you all the jargon and all the action without all the boredom.
    Great show.

    • @SuzDove
      @SuzDove 9 лет назад

      Joe T So true indeed!!! I am loving the challenge, Hank and the team really make it FUN!!

  • @julianewberry5468
    @julianewberry5468 8 лет назад +7

    I have been struggling to understand this for over a week, and you managed to explain it clearly in 12 minutes. Well done. Very well done.

  • @aniridhbakshi
    @aniridhbakshi 10 лет назад +14

    My uni prof made this WAY more complicated
    YOU ROCK!

  • @homeiswonderland
    @homeiswonderland 10 лет назад +18

    Cramming for an in class paper I have to write on this tomorrow. Finally understanding it! Thank you so much!

  • @davelangford2439
    @davelangford2439 10 лет назад +4

    Probably the best CC video I've watched. Hank actually spoke at a normal speed!!

  • @flubbycat1724
    @flubbycat1724 10 лет назад +2

    It's amazing how all the little parts (both visible and microscopic) inside of you are a big deal on helping you function and live against things outside the body or to adapt the body to the environment.

  • @michel4743
    @michel4743 11 лет назад +34

    Two small questions:
    - Do you workout a little or not at all?
    - If you don't workout: How much did your arm hurt the next days from all those curl reps?

    • @sarahk6926
      @sarahk6926 11 лет назад +2

      LOL ikr I thought he was going to stop much earlier!

    • @TheSkullcrusher73
      @TheSkullcrusher73 10 лет назад +3

      Pretty sure that weight is probably nothing for him.

  • @defydog
    @defydog 12 лет назад

    I learnt about this when I was doing a course to become a fitness instructor.
    I remember taking several lessons to learn less about the process than you taught in under 15 minutes.
    Thankyou

  • @nydiahernandez2127
    @nydiahernandez2127 11 лет назад +51

    you teach me WAAAAAAYYYYYY better than my science teacher!!

    • @knoxc4248
      @knoxc4248 4 года назад +2

      man that comment was 6 yrs ago... how di that turn out?

  • @boredoutofmymindize
    @boredoutofmymindize 12 лет назад

    My IB biology teacher used this video in class. So much more helpful than all those stuffy old videos from the late 90s with boring voice overs on lame animations. I actually learned a lot. Thank you so much for making these.

  • @clarecohen399
    @clarecohen399 10 лет назад +13

    I really want to thank you for these videos. Without you I would be lost in my anatomy class. You're the reason I'm getting an A in my class. Not only do you clarify everything for me but you make learning FUN and enjoyable. PLEASE KEEP MAKING VIDEOS!!!

  • @crystalsdynamicwellness8239
    @crystalsdynamicwellness8239 9 лет назад +8

    this video saved my life!!! trying to understand the myosin and actin filaments from my text book made me want to cry and jump off a bridge in tandem!!! Now I totes get it thanks to the schnazzy sliding filament model! Thank you snarky smart guy... you are my hero!

  • @maurco007
    @maurco007 10 лет назад +106

    He forgot to mention that muscles are antagonistics. Therefore, if one contracts the other one relaxed. So ATP IS REQUIRED ALWAYS

    • @nalenenlal
      @nalenenlal 10 лет назад +3

      Thank you

    • @Zizzyyzz
      @Zizzyyzz 5 лет назад +5

      I doubt he "forgot". Lol.

  • @andy4an
    @andy4an 12 лет назад

    Hank, your presentation is much less annoying than the original episodes. I am glad because I enjoy your content.

  • @TheKILLERDOG712
    @TheKILLERDOG712 9 лет назад +165

    "One of the sexiest things that happen in your body...other than sex"

  • @user-qm4lk7lm9o
    @user-qm4lk7lm9o 6 месяцев назад +1

    soooo much better than 3 hour long power points followed by 3 hour long robotic voiced videos where I retain absolutely nothing

  • @PeninsulaPaintingProjects
    @PeninsulaPaintingProjects 8 лет назад +73

    You're crazy but you're a lot better than my tutor so thank you.

    • @Omisslewis1976
      @Omisslewis1976 8 лет назад

      I used his videos in my classes b/c I love them, he makes it fun!

  • @Snagrit
    @Snagrit 12 лет назад

    After the first 4 videos of Crash course Biology I had a new hobby which led to me enrolling in an introductory Biology course as an elective to my degree. 6 Months on, and I am now studying a double degree (Arts/Science) With majors In history, Biology and Psychology. In high-school I hated science, but I can honestly say thanks to you a passion has been ignited inside of me and I know look forward to many years of studying this fantastic subject that YOU introduced me too. Thanks.

  • @SavourySnape
    @SavourySnape 12 лет назад +4

    So you managed to explain basic sliding filament theory in the space of 12 minutes from the beginning, while being absolutely engaging and funny at the same time?
    Better than any lecturer with any amount of experience that I've seen...

  • @randomnerdfairy
    @randomnerdfairy 12 лет назад

    i did most of my revision for my gcse biology with Crashcourse and i managed to get an A* on my first exam so thank you hank

  • @randomtrucks
    @randomtrucks 9 лет назад +126

    Wait, our muscle filaments need ATP in order to relax?
    WHOOoooaaahhhhhhhhhhhhhhh that's why dead bodies are stiff
    cool

  • @amber854
    @amber854 10 лет назад

    This channel is an absolute life save.
    I've an ISA on muscles tomorrow and I've been trying to get my head around the topic for days with no luck. I rewatched this a few times and then made notes as I went along, and finally its making sense! All is not lost! so THANK YOUUUUU!!!!!

  • @sircuban5852
    @sircuban5852 6 лет назад +32

    Who else studying for their bio exam

  • @toinfinityandpandas1372
    @toinfinityandpandas1372 7 лет назад +1

    You have no idea how appreciative I am of this channel. It's helped me go through A&P, Microbio, Bio l and now finally...bio ll 😂 you guys are a godsend

  • @Brownzz07
    @Brownzz07 10 лет назад +8

    Hank, you da real MVP!

  • @TechWeLove
    @TechWeLove 7 лет назад +1

    I feel that all Anatomy Courses should have tons of videos like this, but also focused at helping students pass practicals, and exams.
    Find professors who put their lectures into video presentations. That will help a ton.

  • @danielpetracci3826
    @danielpetracci3826 8 лет назад +4

    This was so helpful! What would I do without Crash Course?

  • @brunathehuman
    @brunathehuman 12 лет назад +1

    I have a test on muscles this saturday and this video potentially saved my grades. Thank you so very much, Hank! Great timing!

  • @CaliGirlFromKZ
    @CaliGirlFromKZ 10 лет назад +3

    I am SO grateful for this and for other crash course bio videos!

  • @roohullahbukhari1557
    @roohullahbukhari1557 8 лет назад

    I never learned physiology in the class from proffessor who used to to teach us... it's u man who helped me master it....

  • @legitfacts6731
    @legitfacts6731 10 лет назад +22

    Moral of the video, if you want a genius son then just name him Huxley :D

  • @preisser32750
    @preisser32750 12 лет назад

    Hank... I may be old enough to be your mom.. but as a nursing student... I am in love with your adorable nerdy persona... your the best.

  • @Orangemocha4
    @Orangemocha4 11 лет назад +4

    Learned more here than in my class - plus the guy was really cute.

  • @isardiv08
    @isardiv08 11 лет назад +1

    You're not the only one! I just love life and learning amazing things.

  • @putrisha94
    @putrisha94 11 лет назад +13

    Here for my anatomy test. Thank God for CrashCourse cuz I didn't understand shit from that lecture >.

  • @naecon5293
    @naecon5293 10 лет назад +1

    hank, you have no idea how much these videos have helped me i'm on my way to becoming a nurse and these have helped my study tremendously!!! thank you so so so much!! DFTBA :)

  • @heatherstubbs5466
    @heatherstubbs5466 10 лет назад +3

    Great video! Easy to understand! I need more of these videos to get me through A&P!

  • @christinewithak7903
    @christinewithak7903 10 лет назад

    I think these descriptions are amazing, so easy to understand for a "mature age" and previously uneducated student. Thank you.

  • @guchichan
    @guchichan 10 лет назад +4

    This makes A&P fun to learn!!! Haha ☺️

  • @rondanicolay7493
    @rondanicolay7493 10 лет назад +2

    I showed this to my massage students it really helped them so much..thanks for making learning about muscles fun !!

  • @786shabz789
    @786shabz789 9 лет назад +10

    U forgot sarcrolemme and sarcoplasm and the h,m,a and z zones ( I think it's just my a level course that I need to remember all this stuff damn there's too many sarcro

    • @reno2934
      @reno2934 9 лет назад +1

      786shabz789 Theres 3 sarco things (atleast in level 1 bio which I assume your in), not that many :p

  • @thebride910
    @thebride910 12 лет назад

    Wow that was so good. Thank you for dumbing it down for me and explaining it simply in a language that I could understand. If only all teachers talked and explained this way.

  • @gr3g0rus
    @gr3g0rus 10 лет назад +7

    "Like middle school students at a formal dance," Haha perfect.

  • @Snagrit
    @Snagrit 12 лет назад

    Hank, I know you don't get the chance to read all these comments but I hope you do read this so you know how influential you have been to me. I started my first year of University at the start of this year, majoring in History and Politics planning on becoming a teacher (as I have a passion for education).

  • @BittiKit
    @BittiKit 10 лет назад +4

    Thank you so much. Anatomy was confusing me so much a few minutes ago, and this is definitely helping me to better understand the material.

  • @RodeyMcG
    @RodeyMcG 12 лет назад

    It is so impressive how much you covered in 12 minutes, and how well you covered it! It took me at least of week of lectures to understand that before.. You even managed to cover rigor mortis! Nice!

  • @r_herobunny
    @r_herobunny 11 лет назад +34

    Hank and his hot pockets....

  • @ApertureScience27
    @ApertureScience27 12 лет назад

    I swear Hank is reading my mind. I was just reading about this on Wikipedia a few days ago. I was having a bit of trouble understanding, so thank you Hank for helping me out.

  • @shilpakaran1
    @shilpakaran1 11 лет назад +8

    Hank! your ass grab...spot on!

  • @amakachinwe5711
    @amakachinwe5711 10 лет назад

    Where were you guys my freshman year of college?!? You guys are amazing! Thanks!

  • @DinahB987
    @DinahB987 9 лет назад +10

    ATP in the Hisoooouse!!!!!!

  • @nikgates9
    @nikgates9 8 лет назад +1

    Is it just me or was he PARTICULARLY sassy in this video? God I love you.

  • @greg77389
    @greg77389 8 лет назад +3

    Where did Hank find that stunt double to work out for him?

    • @VictorVivex
      @VictorVivex 8 лет назад

      greg77389 Assassin's Creed

  • @HelenA-un8co
    @HelenA-un8co 8 лет назад +1

    Crash course saved my grade in Bio II. I am so so so so grateful towards you guys for making videos that I actually learn from!!!

  • @justinweng3849
    @justinweng3849 7 лет назад +3

    "pent up frustration" "groping" this dude is really thirsty amirite lmao

  • @My2ndnephew
    @My2ndnephew 12 лет назад

    I'm really glad you videotape these. It makes it possible for me to repeat parts of your lecture I miss because I find myself concentrating on moving my muscles and thinking about what happens under the skin cover.

  • @aykayjk
    @aykayjk 11 лет назад +26

    Why can't Hank be my teacher??? My school has 2 anatomy teachers but I got the sucky one and tomorrow it's my final and he didn't help anything.

    • @NuUnlimited
      @NuUnlimited 11 лет назад +17

      Hank would be the best teacher EVAHHHHH!

    • @NeonsStyleHD
      @NeonsStyleHD 10 лет назад +3

      Why don't you show this video to your teacher, he might learn how to teach better, and thus be a better teacher and that means you will like him more and therefore you will learn more and enjoy to classes more. Don't however tell him he sux as a teacher as that will assuredly get you bad grades!.

  • @alonmln
    @alonmln 12 лет назад

    i am no judgin, i love this show. and because it is an educational show , i think the creators would like to be as accurate as they can be...

  • @madidrenowatz828
    @madidrenowatz828 8 лет назад +3

    I UNDERSTAND MUSCLES NOW

  • @JoeAuerbach
    @JoeAuerbach 12 лет назад +2

    One of my favorites lately. This is one of the best things that happens in the body. Totally fascinating.

  • @Abominatrix650
    @Abominatrix650 10 лет назад +2

    I've had 2 lectures on this so far and I've understood more with this video than I did in those lectures. But in all fairness, the lectures didn't have pause and rewind features and this video doesn't require me to get up early and have minimal breakfast to attend!

  • @jennypenny4212
    @jennypenny4212 10 лет назад +77

    I like to eat muscle fascicles 🍗🍖

    • @MaryBrooke
      @MaryBrooke 7 лет назад +1

      I will never look at a steak the same way again.

    • @AnuRMusicVideos
      @AnuRMusicVideos 6 лет назад +1

      I mean...what did you think steak was?

    • @hiffahyphae6707
      @hiffahyphae6707 4 года назад

      Anu R When I was younger (4 or 5) I used to think there was a certain part of an animals body that was the meat we eat. Man was I stupid

  • @ghnunes
    @ghnunes 8 лет назад

    You! For president. Presentation on the subject in 3 days and you made it possible.

  • @daaaniphantom
    @daaaniphantom 9 лет назад +6

    1:32 I'm dying hahaha

  • @sarcasmisnotdead
    @sarcasmisnotdead 11 лет назад

    Don't worry bout it! I failed my HL Maths exam last year, so they made me resit two subjects this session. I actually passed with a 4 in bio and I did literally no revision. If you've done more than nothing, then you'll be fine! Also, I hate IB

  • @bernardogrosse7804
    @bernardogrosse7804 9 лет назад +11

    The best way gain muscle mass fast there Gain Weight-F

    • @warrengallogly4994
      @warrengallogly4994 9 лет назад

      +Bernardo Grosse I understand this program is only for man?

    • @troyryans2316
      @troyryans2316 9 лет назад

      +Bernardo Grosse This man knows what he is talking

    • @damianoler9226
      @damianoler9226 9 лет назад +1

      +Bernardo Grosse it's incredible

  • @zizoabdallah707
    @zizoabdallah707 Год назад +1

    You definitely explain it better than my teacher

  • @KurdishFalconPKK
    @KurdishFalconPKK 10 лет назад +5

    Pause at 0:01 for the fright of your life.

  • @micopico09
    @micopico09 11 лет назад

    I totally brushed up on my muscle physiology with the video before giving a lecture. That's right: GIVING one. Also, totally used the middle school formal dance analogy. Thanks, Hank et al!

  • @Tibialisanterior
    @Tibialisanterior 5 лет назад +3

    I never understand the bits where he talks about ATP and ADP
    Please can someone explain like im 5 aha. 😭😭😭
    Anywaysss GREAT VIDEEOOOOO!!!!

    • @crow4834
      @crow4834 5 лет назад

      ATP broken down is ADP and a phosphate

    • @crow4834
      @crow4834 5 лет назад

      When the third phosphate is removed from ATP, you get ADP. The molecule has much less chemical energy, because the high energy bond between the last 2 phosphates has been broken.

  • @peppusae
    @peppusae 9 лет назад +2

    Gosh, thanks so much, Hank! c:
    I have an exam tomorrow and I was really frustrated about not knowing a single thing! XD
    So I found this really useful, so much preach for you! ♥

  • @indra4325
    @indra4325 10 лет назад +10

    i have a serious crush on Hank, like can i marry you??!? haha

  • @dragoneslayer94
    @dragoneslayer94 11 лет назад

    My teacher couldn't answer this question and you made a point of reminding me. If the muscles resting state is contraction... Why do are muscles fatigue after sustained contraction when that would seem to require less respiration?

  • @DivineZeal
    @DivineZeal 8 лет назад +3

    nursing school entrance exam 90/90 here i come

  • @ashnur
    @ashnur 12 лет назад

    I heard somewhere that it has to do something with the nerves miscommunicating, creating a positive feedback loop, the more you want to relax them, the more they get contracted

  • @madhu3dots
    @madhu3dots 4 года назад +5

    Who is watching this during corona crisis?

  • @nicolasgregg7498
    @nicolasgregg7498 7 лет назад

    UCSB biology upperclassman here... currently taking upper division physiology... this video is the perfect review tool; covers just about everything 100x better than the professors can with just slides

    • @nicolasgregg7498
      @nicolasgregg7498 7 лет назад

      no offense to the professors here, they are great too! you guys just are more prepared visually

    • @nicolasgregg7498
      @nicolasgregg7498 7 лет назад

      @thought bubble

  • @5711MRAnderson
    @5711MRAnderson 12 лет назад

    using this to study for my exam tomorrow morning...awwwwwwww yeah! thanks Mr. Green

  • @instormental
    @instormental 12 лет назад

    It's amazing how despite all the electricity and chemistry needed to activate a muscle, when I want to move whatever body part, it seems to do so instantly, and despite how many different muscles a movement requires, it usually works with awesome synchronization (i.e. the way we just wish we could make robots move but somehow you can always tell a robotic movement from a natural one).

  • @ParallelPain
    @ParallelPain 12 лет назад

    Crashcourse guys. Can you please remember to update you playlist? I'm sure there are others like me who just put on the playlist while we do other stuff. Biology playlist is two videos behind at the time of writing.
    Thumbs up so they can see it.

  • @hotelhero4193
    @hotelhero4193 11 лет назад +2

    Amazing videos guys. Watched a lot of them now and they are all very good at getting the info across.
    Studying to be a personal trainer and doing hnd level fitness. Again, great videos :)

  • @patplayz7752
    @patplayz7752 4 года назад +1

    I just wanna get rid of school and I can’t thank you enough for helping me getting rid of my worst nightmare.

  • @sterellabobella
    @sterellabobella 11 лет назад +1

    Wow, this is really interesting. I never would have thought it was that complex. Our bodies are truly amazing, I found myself pondering my hand's movement throughout the video. Keep up the great videos!

  • @mindblah
    @mindblah 12 лет назад

    The amazing thing about this whole process is how fast it can occur. From the description it sounds like it would take too long for it to occur.

  • @WorthlessWinner
    @WorthlessWinner 12 лет назад

    The speed of reactions is insane. I think the small distances things are happening over are what let millions of reactions happen every second.

  • @protzy16
    @protzy16 12 лет назад

    I have a request; Can you make a Crash Course for every single academic discipline, from Physics to Philosophy and Geography to Geology. This isn't so I can do well in school, I don't even go to school anymore, I just would love to be knowledgeable about many fields and the funnest and easiest way to do that seems to be your courses.

  • @spotty2012
    @spotty2012 9 лет назад +1

    The animation from 10:25 to 10:30 is slightly off from the audio. The animation does not show that the troponin is dragging the tropomyosin out of the way; the tropononin is just moving itself out of the way.

  • @TheAncientPaths1
    @TheAncientPaths1 11 лет назад

    Love this video! Takes my hours of studying for Exercise Physiology and condenses it into 13 minutes.

  • @ruddypaulino5694
    @ruddypaulino5694 6 лет назад

    1 month in 13 mins. Thanks man. You're saving grades every day!

  • @WCOBDisorder
    @WCOBDisorder 12 лет назад

    The company that does the animations(Thought Bubble?) does an incredible job with complexity.

  • @Bptips
    @Bptips 12 лет назад

    all cells (not stem) are specialised for a specific function. A tissue is a group of these cells working together. A muscle is an example of a tissue. An organ has two or more tissues to perform its function.
    I hope that helps, but not sure how specific you wanted to be

  • @justinmorrow81
    @justinmorrow81 11 лет назад +1

    Finally done for the night. Wish me and everyone else luck on the AP Exam in 10 hours!

  • @katherinezhao5809
    @katherinezhao5809 7 лет назад +1

    Thank you so much for this awesome episode!!! And the result that I got was also fantastic! The first time I got 100% in my Biology assessment!!! Thanks again for crash course!!! Keep on doing it!!!

  • @carynosullivan7416
    @carynosullivan7416 7 лет назад

    Thank you for taking something complicated and making it understandable and humorous.