The Skeletal System: Crash Course Anatomy & Physiology #19

  Рет қаралды 5,378,960

CrashCourse

CrashCourse

Күн бұрын

Today Hank explains the skeletal system and why astronauts Scott Kelly and Mikhail Kornienko are out in space studying it. He talks about the anatomy of the skeletal system, including the flat, short, and irregular bones, and their individual arrangements of compact and spongy bone. He'll also cover the microanatomy of bones, particularly the osteons and their inner lamella. And finally, he will introduce the process of bone remodeling, which is carried out by crews of osteocytes, osteoblasts, and osteoclasts.
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: apple.co/3d4eyZo
Download it here for Android Devices: bit.ly/2SrDulJ
Chapters:
Introduction: Astronaut Bones 00:00
Structure of the Skeletal System: Axial & Appendicular Bones 2:33
Bone Shapes: Long, Short, Flat, and Irregular 3:11
Internal Bone Structure 3:47
Osteons and Their Lamellae 5:05
Osteoblasts and Osteoclasts 5:54
Bone Remodeling: Resorption & Apoptosis 7:28
Review 9:28
Credits 10:13
***
Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:
Mark Brouwer, Jan Schmid, Steve Marshall, Anna-Ester Volozh, Sandra Aft, Brad Wardell, Christian Ludvigsen, Robert Kunz, Jason, A Saslow, Jacob Ash, Jeffrey Thompson, Jessica Simmons, James Craver, Simun Niclasen, SR Foxley, Roger C. Rocha, Nevin, Spoljaric, Eric Knight, Elliot Beter, Jessica Wode, Julie Kaminski, Steven Ness, Hannah!!!!!, Pamela Genise, Mark B. Williams, Becky Kaplan, William Edwards, Rebecca Carlson, Matthew Tryba, Eric Birchfield
--
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Пікірлер: 1 100
@youtubequeen4251
@youtubequeen4251 4 жыл бұрын
Bones: Made of active connective tissue Stores calcium phosphate and minerals Hematopoiesis~blood cell production 206 bones Axial or perpendicular | | Vertical. Appendages/others Shape: Long bones longer than wide Short bones short cube like Flat bones thin ones Irregular bones can't classify Compact bone smooth Spongey porous: cross hatching supports (trabeculae)~resist stress & bone marrow red=blood cells yellow =fat Flared ends=epiphyses Middle=dialysis Middle layer=medullary cavity Osteons: cylindrical/weight baring/cented of bone (animation of bone being cut in half they are outside the center hole of bone, and appear to be like frog eggs) Each "frog egg" is a lamellae and filled with collagen fibers that run in same directions. Central canals: hold nerves and blood vessels~nutrients Lucanae spaces by central canals~astrocytes: mature bone cells that monitor and maintain your bone matrix Bone remodeling~ Osteo blasts & Osteo clasts #1. O. Blasts: bone makers Cartilage is framework for bone #2. O. Clasts: bone breakers ~resorption, apoptosis (self destruct)
@ryja3z
@ryja3z 4 жыл бұрын
you ma'am are amazing
@swagcat7779
@swagcat7779 4 жыл бұрын
Chad
@eileenbvanmerk2700
@eileenbvanmerk2700 8 жыл бұрын
As a nursing student, we constantly have to go back to anatomy and physiology to understand what happens during disease processes. These videos are super helpful and so much more convenient compared to flipping books open. Thanks so much for these! I was super impressed by how detailed and accurate your A&P videos are.
@eileenbvanmerk2700
@eileenbvanmerk2700 8 жыл бұрын
+Don Blanket thank you! :)
@sarahnaji4746
@sarahnaji4746 7 жыл бұрын
U should make a website and u should invent exams and quizes for students!!
@shriyasai7521
@shriyasai7521 5 жыл бұрын
Yes please 🙏
@sweeflyboy
@sweeflyboy 5 жыл бұрын
YASSSSS!
@iffathfatima9248
@iffathfatima9248 5 жыл бұрын
Sarah Naji that would be awesome
@dinhkhanh_11_21
@dinhkhanh_11_21 5 жыл бұрын
@@nathanyoder2379 thanks much appreciate that
@lynns4122
@lynns4122 5 жыл бұрын
Khan Academy has quizzes on similar stuff
@sadielikesyou
@sadielikesyou 8 жыл бұрын
I'm finally going to reach out and thank you via a comment... little do you know, I am a nursing student and I have used your videos for every biology course I've had to take as a quick refresher before exams. I cannot thank you enough for these videos! You explain it in a language that I can understand as opposed to the boring lull of the borderline medical journal of a textbook that I have! (why do they insist on being so sleep provoking?!) So, THANK YOU, your channel rocks and I recommend them to all my fellow students that need a quick rehash. :)
@naomisamantha822
@naomisamantha822 6 жыл бұрын
Because studying anything to do with health or medicine can actually get boring but it's people like us that eventually save lives. (that's my motivation)
@Michaliey
@Michaliey 5 жыл бұрын
I’m going through the same thing right now
@vinsmith890
@vinsmith890 5 жыл бұрын
I have a test for LPN tomorrow on integumentary and muscular/skeletal. Open book luckily but these videos help so much
@mackenziepark5593
@mackenziepark5593 8 жыл бұрын
This is how I'm studying for my test in biology.
@motokid413
@motokid413 8 жыл бұрын
+Mackenzie Park You're gonna fail
@mackenziepark5593
@mackenziepark5593 8 жыл бұрын
+evanups I know...
@henrygresel8655
@henrygresel8655 8 жыл бұрын
I'm doing this to study to xD
@Mustafa2219
@Mustafa2219 8 жыл бұрын
did u fail? I honestly want to know.
@scoobty4449
@scoobty4449 8 жыл бұрын
hahanice name
@ericgonzalezmusic
@ericgonzalezmusic 7 жыл бұрын
You are a life saver. U are the reason i pass anatomy
@Juldaniacanal11
@Juldaniacanal11 6 жыл бұрын
Eric Gonzalez same
@marvelousmimi9165
@marvelousmimi9165 4 жыл бұрын
I hope I pass this class is hard
@LovelyyAubrey
@LovelyyAubrey 4 жыл бұрын
Eric Gonzalez That’s why I’m here trying to pass lol
@XxXxmusicnhorsesXxXx
@XxXxmusicnhorsesXxXx 9 жыл бұрын
I am a current A&P student in college and I couldn't understand this from my own teacher. This video definitely helped me and broke it down in a way she couldn't. Keep up with these videos! They help so much
@julie3368
@julie3368 4 жыл бұрын
Who else is watching this because of their teacher in quarantine
@elinascott
@elinascott 4 жыл бұрын
Me!
@bakesbynoor
@bakesbynoor 4 жыл бұрын
lol mee
@amyburke5867
@amyburke5867 4 жыл бұрын
Or are a teacher, looking for videos for e-learning!!!! :)
@nicolboys6958
@nicolboys6958 4 жыл бұрын
absolutely me!!
@jacksonharley8550
@jacksonharley8550 4 жыл бұрын
me
@jordanwoods146
@jordanwoods146 8 жыл бұрын
You should do a video on Intramemberous and Endochandral Ossification!
@kary2783neto
@kary2783neto 4 жыл бұрын
What the heck you saying Jordan????
@juandavila2999
@juandavila2999 4 жыл бұрын
I
@phillipanthonymeeks1997
@phillipanthonymeeks1997 6 жыл бұрын
I'm so thankful for wonderful people like you. I can stare about my books for hours feeling frustrated about the point not getting through. Y'all make learning easy and fun! If only I could get my BS from Crash Course instead of my college.
@chrisbailey5713
@chrisbailey5713 9 жыл бұрын
I always do studying up before the Skeleton War I need to learn their weaknesses.
@kid14346
@kid14346 9 жыл бұрын
Chris Bailey According to this video, send them to space. They will consume themselves!
@eternalaether8463
@eternalaether8463 9 жыл бұрын
Chris Bailey We will defeat you fuccbois
@JoseJose-sh7fr
@JoseJose-sh7fr 9 жыл бұрын
Find the necromancer controlling them, without him the entire skellymen army will just be reduced to some not-so-spooky normal skeletons.
@kid14346
@kid14346 9 жыл бұрын
joseph clisham Plot twist! The Necromancer is a skellyman!
@julli4821
@julli4821 7 жыл бұрын
??? XD
@taiipotatoie
@taiipotatoie 4 жыл бұрын
6:25 I can't unsee the menstrual pad 😂
@Glaerdrune
@Glaerdrune 7 жыл бұрын
"We also have to figure out how to keep their bodies from consuming their own skeletons" is the most hardcore phrase I've heard all week
@kaylaarmani1762
@kaylaarmani1762 5 жыл бұрын
Currently pulling an all nighter watching your videos for my exam tomorrow. I wish i found you at the beginning of the semester. You simplify everything greatly. Idk why professors teach a whole bunch of other junk that wont even be on the test. You get straight to the point. Love it
@Amberhhhh
@Amberhhhh 7 жыл бұрын
This makes me feel like I'll be okay for my test
@rozhinhamidizareh1076
@rozhinhamidizareh1076 4 жыл бұрын
As a 14-year-old Iranian student, your videos really really help me to improve my English and knowledge of Biology at the same time. I watch your videos before my classes & they help me to stay on the top of my studies. Thank U!
@tsirbuts
@tsirbuts 7 жыл бұрын
I'm cramming for an anatomy test so I'm watching all the videos that I need for the test 😂
@notPalores
@notPalores 4 жыл бұрын
How’d it go?
@kenny7539
@kenny7539 4 жыл бұрын
Sebastian Honores I think your a few years to late 😂😂
@corbinmarion4616
@corbinmarion4616 7 жыл бұрын
"Bones, well, their pretty clutch!" Without a doubt the best quote I have heard this week.
@GabeNewellDFTBA
@GabeNewellDFTBA 9 жыл бұрын
This video is 2spooky4me. May Mr. Skeltal bless you with calcium
@GabeNewellDFTBA
@GabeNewellDFTBA 9 жыл бұрын
Jetfuel Steelbeams Your name is 2dank4me.
@DarkLordToturials
@DarkLordToturials 9 жыл бұрын
Lord GabeN There is a skeleton inside you RIGHT NOW Spooked enough
@GabeNewellDFTBA
@GabeNewellDFTBA 9 жыл бұрын
DarkiLordito Warn me before you spook me so hard.
@DarkLordToturials
@DarkLordToturials 9 жыл бұрын
Lord GabeN You must always be aware of the spookyness
@cyanidegiraffe615
@cyanidegiraffe615 9 жыл бұрын
Jetfuel Steelbeams but im not a rappa
@LilDaz690
@LilDaz690 8 жыл бұрын
Thank you for creating these classes! A&P online is pretty difficult, you make it a bit more interesting and helps a lot!
@GuerreroAnthrax
@GuerreroAnthrax 8 жыл бұрын
Currently studying to receive my NASM personal traininer certification, I'm terrible at studying but I have not only found but also understood all the material on the test through your videos, thank you so much I will definitely be contributing to the channel through patreon!
@officerpoopnugget9989
@officerpoopnugget9989 4 жыл бұрын
Crash course is probably one of the greatest channels on yt. your bio and a&p videos are gonna be my study tools for the ap
@anthonyfosu6354
@anthonyfosu6354 9 жыл бұрын
Keep these awesome videos coming. Thank you CrashCourse A&P for being the spine to my KZbin education.
@joanmubea5469
@joanmubea5469 11 ай бұрын
This is my favorite "professor"..... Thank you!!! CrashCourse has become my favorite learning site. You explained it so well!!! Thank you!!!
@christofferenfors3676
@christofferenfors3676 7 жыл бұрын
Just got 5 out of 5 in my A&P Test. Is there anyway I can have a very long and seemingly akward 3way hug with u and ur dog? U guys are something else!
@sameersheikh7603
@sameersheikh7603 6 жыл бұрын
I'm a year late but congratulations! :D.
@livelifeandlaff2412
@livelifeandlaff2412 4 жыл бұрын
im 2 years late but congraats
@user-zu8lq8qe2y
@user-zu8lq8qe2y 4 жыл бұрын
Im 3 years late but yay you!
@kimberleysinclair5904
@kimberleysinclair5904 Жыл бұрын
Thank you Hank. I am a AP Psych and Health teacher and am currently studying RHIT for a certificate from ELAC. Your videos were informative, entertaining, fast and I learned things I did not know before. I will change how I teach Health and AP Psych thanks to Hank. You are a live saver!
@Bossyglossy1
@Bossyglossy1 8 жыл бұрын
I can't thank you enough...Excellent analogies!!!
@x612x
@x612x 9 жыл бұрын
I have waited for this SO long! Being a physical anthropologist my self I loved how you dealt with this subject :)
@HiThere-yy8zk
@HiThere-yy8zk 4 жыл бұрын
I have to do a 20 slide "slideshow" for a final. My textbook is so confusing. literally bolds and italicizes everything that is important. Crash course is the only reason I'll be passing this year. I'm just watching these videos. I won't even bother reading. Thank you Crash Course! You guys are the absolute best!
@jrogue3710
@jrogue3710 4 жыл бұрын
Hank you honestly are my favourite everything! You are helping me through SO many classes where my teacher sounds like hes speaking friggin German when explaining anatomy. When I become an RMT, you have a free massage ready for you as a thank you!!!! I had NO idea just how medical this profession is going to be or the training to get there. You are saving me!
@jesserobin3689
@jesserobin3689 4 жыл бұрын
I think I'm literally crash course's biggest fan. I love this channel! If it wasn't for crash course I probably wouldn't be doing as well at varsity as I am. The visuals are also a big help. Thank you, Hank.
@mellissamcpartland740
@mellissamcpartland740 8 жыл бұрын
Probably my favorite A&P episode so far! It was adorable yet informative!
@unusedspacesr2740
@unusedspacesr2740 4 жыл бұрын
Im done with school and still watching crash course just for the heck of it
@KnightsOfBellamy
@KnightsOfBellamy 9 жыл бұрын
THANK YOU SO MUCH FOR THIS COURSE YOU HAVE NO IDEA HOW IMPORTANT THIS WAS FOR ME!!!
@NykolXOXO
@NykolXOXO 7 жыл бұрын
I love Crash Course. Not only is it informational, it's diverting to watch and it makes learning fun
@vanessahernandez8524
@vanessahernandez8524 8 жыл бұрын
I love watching these videos before an exam, thanks a bunch for summarizing key points to keep me focused :)!
@shayna1182
@shayna1182 4 жыл бұрын
LOL! I live how fast you talk. I makes getting info way easier
@mcjohnkarshavski1953
@mcjohnkarshavski1953 4 жыл бұрын
I like the way he talks fast. It doesn't make it look long and boring to watch and learn. Good skills
@runfreeparkour3241
@runfreeparkour3241 5 жыл бұрын
this is by far the best study resource ive ever had. Cant even describe how helpful these videos have been to me. Thanks crashcourse.
@chrisberggren2700
@chrisberggren2700 Жыл бұрын
I never knew there was this much to bones. This video has greatly educated me and will definitely help as an EMT. After watching I have a much better understanding on why bones can be strengthened and how they regenerate. Thanks to osteoclasts and osteoblasts bones can become stronger!
@barbiet2806
@barbiet2806 5 жыл бұрын
I just wanted to say thank you for all your videos, and making them interesting and funny while teaching. I home school my 10 year old son, and he absolutely enjoys watching your channel
@aarushigrover6674
@aarushigrover6674 8 жыл бұрын
Dude you are amazing!!!! U make me love the subject! Don't listen to any negative feedback! Keep going! Love the way u talk so fast! So don't give it up!
@sijalshrestha605
@sijalshrestha605 8 жыл бұрын
yes.. feel same here
@julli4821
@julli4821 7 жыл бұрын
Yesssssss~ I fully agree!
@brendaolson5181
@brendaolson5181 6 жыл бұрын
agree! make me smile while learning
@yourroyalhighness6297
@yourroyalhighness6297 5 жыл бұрын
Yes. Maximizing time is most appropriate when creating videos, and perhaps, the viewers shall adjust the speed into 0.75x if they can't understand fully because the channel never asked them to watch their videos. Hahaha, This is just my opinion.
@pragyapandey2517
@pragyapandey2517 4 жыл бұрын
Ekdm Sahi boli.. ❤❤
@thelostchurches9366
@thelostchurches9366 6 жыл бұрын
As a visual learner, I have watched over and over and over again and believed or not, it did help me a lot. Thank you so much for it.
@deemaahmed941
@deemaahmed941 4 жыл бұрын
i swear you are just soooo good with explaining and representing visual models to help us understand the material ! thank you
@childrenofthelightvelichat6074
@childrenofthelightvelichat6074 2 ай бұрын
Any 2024 related😂😂
@m3gal0z3r
@m3gal0z3r 9 жыл бұрын
thank mr skeltal for calcum and strong bone
@gracebrewer4281
@gracebrewer4281 5 жыл бұрын
These videos are fantastic as a preview for new material and an overview before exams. The pace is perfect.
@charlottesienna
@charlottesienna 9 жыл бұрын
The osteoblasts and osteoclasts are so cute- Thank you to the graphics team for personifying Anatomy and physiology! I love it
@geraldellis1177
@geraldellis1177 7 жыл бұрын
6:28 YOU GOTTA SEE IT #YOUR INSIDES WILL SHED WHEN YOU SEE IT
@loudejesus5973
@loudejesus5973 8 жыл бұрын
I was supposed to make a pun about the skeleton, but none of them seemed "humerus".......... I'll be here all week.
@geraldellis1177
@geraldellis1177 7 жыл бұрын
THAT WAS A OST-EONTASTIC PUN
@micanikko
@micanikko 5 жыл бұрын
@@geraldellis1177 That was even worse.
@mariacyrilbaldovino1373
@mariacyrilbaldovino1373 4 жыл бұрын
Lol 😂
@shaymaasuhair8223
@shaymaasuhair8223 4 жыл бұрын
I'm here and its been 4 years... lol
@zazhiita
@zazhiita 6 жыл бұрын
I can't believe I read a whole chapter of several pages and it took me an hour and like 15 min to kind of understand it, and then you come and BANG! in 10 minutes you explained it better than any book could ever have.
@amandarushlow8808
@amandarushlow8808 8 жыл бұрын
I love these videos, you guys really do a great job. Thank you for your time and effort in making these understandable.
@twisttv4030
@twisttv4030 9 жыл бұрын
Outstanding video!
@teresaroach5677
@teresaroach5677 7 жыл бұрын
West boulevard rock
@shwetakhade6531
@shwetakhade6531 6 жыл бұрын
Thank youbso much. You made me interested into the topic.
@kristenschmid5383
@kristenschmid5383 4 жыл бұрын
Love Hank! He makes learning fun. I have used several videos to help teach health during distance learning. I create a Q&A to go along with the videos. Please keep making these educational videos! Thank you!
@sintinglb
@sintinglb 6 жыл бұрын
This video is awesome! So much clearer and more interesting than real lectures
@LizardaWizard
@LizardaWizard 7 жыл бұрын
There needs to be a crash course statistics because a lot of students in AP Stats are not doing so hot
@karinaidiyatullina6897
@karinaidiyatullina6897 5 жыл бұрын
facts
@pelecranileboi9011
@pelecranileboi9011 4 жыл бұрын
There is one
@riversong7818
@riversong7818 Жыл бұрын
Even though certain life circumstances prevented me from pursuing my lifetime goal of becoming a physician, I still love learning all I can about our miraculous human form! I am especially interested in diseases and rare diseases that can, and do, afflict our mortal selves and the advances (and failures) that so many dedicated researchers, scientists, physicians and nurses have devoted their careers to understand, and to hopefully discover the treatments and cures so many us are looking forward to! Kudo's to you all!
@CrispyFriedPickles
@CrispyFriedPickles Жыл бұрын
Wow, this video saved my life 😂😅 I’m definitely a visual learner because I have gained more from this short 10 minute video than I did from a 2 hour lecture in my Anatomy class! 💯🙌🏾 Thank you for making these!!!
@jessicapyles181
@jessicapyles181 8 жыл бұрын
I love Crash Course!! Hank makes learning fun. Keep up the good work!!
@SintaMukti
@SintaMukti 8 жыл бұрын
thank you crash course...
@babyz1218
@babyz1218 7 жыл бұрын
I wish you would slow down when you speak, sometimes I'm trying to process what you'd just finished saying and in that span of time you've already moved on to two other things. Thanks so much for these videos though they're really helping me with my anatomy class, I'm a visual learner xx
@christofferenfors3676
@christofferenfors3676 7 жыл бұрын
Seeing as they need to cram a lot of information into a concise but informative video, speed is important. You can always pause it and re watch it! :D
@henryl3734
@henryl3734 7 жыл бұрын
baby z OMG this is same af
@Glaerdrune
@Glaerdrune 7 жыл бұрын
You can change the speed of the youtube video in Settings if that helps!
@davidschmidt6013
@davidschmidt6013 7 жыл бұрын
Glaerdrune, you'er right, you can....it would be nice if they'd include a .75 setting though. (After all, they offer more options to speed up than to slow down.) At .5, he's just as hard to listen to but for the opposite reason. ...lol....I'm an American but teach Science here in Thailand, and would like such an option, as most of my kids are non-native speakers. Ya hear, that, KZbin admins? We want 75% playback speed!!
@dorony1983
@dorony1983 7 жыл бұрын
You want to slow down read a book for few hours and study. Once you feel you ok with topic and need a quick refresh, watch it.. And it's going to be a great review. English is my second language and I understand him perfectly. That's actually a good practice, because in med school that's how studying should be.. Very very fast
@Leopr1
@Leopr1 9 жыл бұрын
Very mind opening video, didn't knew the skeletal system was so complex.
@mesmarriott127
@mesmarriott127 4 жыл бұрын
These crash course videos are fascinating. I'm hooked.
@nocturne.op9
@nocturne.op9 9 жыл бұрын
this is sooo weird but you guys are kinda synced up with my biology class lessons...you uploaded this video on the week we started learning about bones and stuff,and the same was with the nervous system and the "vision" one,where we started learning about eyes.... reaaalllyyy curious
@OmarZakiTopics
@OmarZakiTopics 6 жыл бұрын
co co coool
@acmartinez129
@acmartinez129 5 жыл бұрын
This has got to be the best one yet! I don’t even think I have to know this stuff but I was just enthralled
@shadooow2370
@shadooow2370 4 жыл бұрын
Your way of teaching is on point. An excellent very relaxed and engaging way to teach a subject.
@Technowhy
@Technowhy 8 жыл бұрын
This is super helpful~~ :3 (more helpful than my actual teacher...XP)
@intertain595
@intertain595 8 жыл бұрын
Hello- ur video really help me understand but can you please make a video more about the bone the endochondral ossification and intramembranous ossification about there formation of steps:)
@skygoneinc9962
@skygoneinc9962 6 жыл бұрын
I don't usually watch stuff like this, but it was super engaging. Great content!
@hopefulstorms5049
@hopefulstorms5049 7 жыл бұрын
This method of teaching/lecturing really works for me.
@abbiedaydreamr636
@abbiedaydreamr636 6 жыл бұрын
Yay I'm not going to fail my science project after all :D
@llarejayll
@llarejayll 7 жыл бұрын
Encouraged me to not imagine what a torsion fracture may feel like... Paused the video to take a couple of minutes to recollect myself
@HM-rw5dz
@HM-rw5dz 9 жыл бұрын
These videos make me so happy ! I fangirled.....
@aysan3901
@aysan3901 6 жыл бұрын
I LOVE CRASH COURSE SERIES THANK YOU ALL!
@ZhasulanAmangeldy
@ZhasulanAmangeldy 9 жыл бұрын
Please make historical video about middle asia
@MzShonuff123
@MzShonuff123 7 жыл бұрын
I wish I'd seen this before I took my test.
@alishacarter3916
@alishacarter3916 6 жыл бұрын
Brilliant video! I'm a first year nursing student here in the UK and have my anatomy and physiology exam tomorrow, so its great for some last minute revision. Thanks!
@DGSEagence
@DGSEagence 9 жыл бұрын
I am so grateful to have access to such a high quality for video. The free access to the knowledge is one of the most important thing in the world. And each of your Videos is a great treasure! Many Thanks for all these videos.
@exole0014
@exole0014 7 жыл бұрын
I wish your my Professor
@pragyapandey2517
@pragyapandey2517 4 жыл бұрын
Same here... My wish too
@randomgirl01300
@randomgirl01300 8 жыл бұрын
His haircut is so cute!
@maddiedhiya9659
@maddiedhiya9659 6 жыл бұрын
randomgirl013 He's cute :)
@Lily-si6uo
@Lily-si6uo 5 жыл бұрын
o.O
@kary2783neto
@kary2783neto 4 жыл бұрын
@@maddiedhiya9659 Nope he is not cute in my opinion he looks like idk can't explain ;-;
@LeweRG
@LeweRG 9 жыл бұрын
How helpful to have this video appear the day before my physiology exam, thanks crash course!
@elliottedow6370
@elliottedow6370 6 жыл бұрын
Thank you for this great video. I have a kinesiology test tomorrow and this video is a great way to review for it! Please make more!
@iman1922
@iman1922 5 жыл бұрын
"Hormone hotline" I'm writing that on my test for sure.
@diegostanley6176
@diegostanley6176 7 жыл бұрын
friking finals making me study this
@snoopsxi
@snoopsxi 4 жыл бұрын
I'm still here and I still love every video you've posted, THANK YOU
@jeanneemmanuel9049
@jeanneemmanuel9049 6 жыл бұрын
You are so helpful. I love how you break this complex information down into such plain English. It's great! please keep them coming (:
@omsafeya
@omsafeya 8 жыл бұрын
Thanks for the Arabic translation 💟 and you are a great teacher 😊👍
@tahaahmed9722
@tahaahmed9722 6 жыл бұрын
Nice name.
@MetalPcAngel
@MetalPcAngel 9 жыл бұрын
Spooky, scary skeletons ♫♪ send shivers down your spine♫♪ Shrieking skulls will shock your soul ♫♪ Seal your doom tonight ♫♪ Spooky, scary skeletons ♫♪ speak with such a screech ♫♪ You'll shake and shudder in surprise ♫♪ when you hear these zombies shriek ♫♪ We're so sorry, skeletons♫♪ You're so misunderstood ♫♪ You only want to socialize ♫♪ (but I don't think we should) 'Cause Spooky, scary skeletons ♫♪ shout startling, shrilly screams ♫♪ They'll sneak from their sarcophagus ♫♪ and just won't leave you be ♫♪ Spirits, supernatural ♫♪ are shy, what's all the fuss? ♫♪ But bags of bones seem so unsafe ♫♪ It's semi-serious! ♫♪ Spooky, scary skeletons ♫♪ are silly all the same ♫♪ They'll smile and scrabble slowly by ♫♪ and drive you so insane! ♫♪ Sticks and stones will break your bones ♫♪ They seldom let you snooze ♫♪ Spooky, scary skeletons ♫♪ will wake you with a BOO! ♫♪♫♪♫♪♫♪♫♪♫♪♫♪♫♪♫♪♫♪♫♪♫♪♫♪♫♪♫♪♫♪♫♪♫♪♫♪♫♪
@Flaggirl1204
@Flaggirl1204 6 жыл бұрын
MetalPcAngel i love this song it is awesome
@abbiedaydreamr636
@abbiedaydreamr636 6 жыл бұрын
YAY THE SKELLI SONG :D :D
@ianpleake6682
@ianpleake6682 9 жыл бұрын
that table of contents is AWSOME I wish every video had that
@rnj117
@rnj117 9 жыл бұрын
oh my god ! this is on the syllabus for my exam in 9 hours time !!! Once again I say thank goodness for Crash Course, cannot express how many times this series has saved me !
@patrickwilson3835
@patrickwilson3835 5 жыл бұрын
It's sad when a Ph.D. professor cant explain something this easily!
@mgs1398
@mgs1398 9 жыл бұрын
so is that why people say they aren't fat, they're 'big boned'?
@amelia5665
@amelia5665 5 жыл бұрын
mgs1398 denial
@melissalouis1680
@melissalouis1680 4 жыл бұрын
A!
@PranamyaPradeep
@PranamyaPradeep 4 жыл бұрын
@@amelia5665 heavy bones are a thing- but they don't make you LOOK fat, they make your actual weight heavier than what you look to be
@jaelipeterson8746
@jaelipeterson8746 5 жыл бұрын
These videos are so helpful! I should be paying my tuition to you! Thank you!
@rachelcox8420
@rachelcox8420 8 жыл бұрын
These are amazing!! Seriously put everything into perspective when I'm studying for my anatomy exams!
@katiexu7785
@katiexu7785 4 жыл бұрын
0:17 skeleton's doing a t-pose.
@kary2783neto
@kary2783neto 4 жыл бұрын
Soo....???
@raven2269
@raven2269 7 жыл бұрын
Anyone catch the Harry Potter reference at 2:09
@udayininamineni3210
@udayininamineni3210 6 жыл бұрын
yup harry's 2nd year
@rahulpillai2669
@rahulpillai2669 6 жыл бұрын
Yeah
@kehwie12
@kehwie12 4 жыл бұрын
yes, it made me so happy
@pingreee9811
@pingreee9811 9 жыл бұрын
This channel is so much better than my school sometimes, because you only use 9 to maybe 12 minutes to learn what you need, in school my teacher uses like an hour just go over 2 main topics which can be explained like this guy.
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