Tissues, Part 1: Crash Course Anatomy & Physiology #2

In this episode of Crash Course Anatomy & Physiology, Hank gives you a brief history of histology and introduces you to the different types and functions of your body's tissues.
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 00:00
Nervous, Muscle, Epithelial & Connective Tissues 1:23
History of Histology 2:07
Nervous Tissue Forms the Nervous System 5:17
Muscle Tissue Facilitates All Your Movements 7:00
Identifying Samples 9:03
Review 9:48
Credits 10:22
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[@crashcourse]

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

[@yannijs6086]

CrashCourse thanks

[@Zhrmald]

What if I am in PC??

[@uniqhnd23]

@@Zhrmald No luck unless you use an Android emulator. Hopefully they'll release a PC version.

[@victoriameconi1920]

In case anyone needs notes for this: Homeostasis: Balance of materials and energy used to keep an individual alive Maintained through cells Organs: when two or more tissues combine Tissue: the fabric of the body Tissue means woven Type of tissue will define the function of the tissue Four primary tissue types Nervous tissue: Control and communication Muscle tissues: Allow movement Epithelial tissues: Cover and protect the body Connective tissues: Provide support to the body Histology: The study of tissue Carmine: A red dye derived from the scaled of crushed up insects used to stain tissue to find different types of cell structure Nervous tissue: forms central nervous system and nerves for the peripheral nervous system, functions to sense stimuli and send electrical impulses through the body Neurons: Specialized building blocks of the nervous system, function to generate and conduct the electrochemical nerve impulses (i.e. think, dreaming, eating, etc) Glial cells: Provide support, insulation, protection, and fuses to blood vessels Nervous tissue is composed of: Cell bod/(soma): Neuron’s life support Nucleus Mitochondria DNA Dendrites: Collect signals from other cells and send signals back to the cell body/(soma) Axon: carries messages to other neurons, muscles, and glands Nervous system: Composed of the brain and spinal cord of the central nervous system, function to regulate and control the body’s functions Peripheral nervous system: Nerves, function to regulate and control the body’s functions Muscle tissues: Contract and move Three types of muscle tissues: Skeletal muscle tissue: long multinucleate parallel cells containing striations, attaches bone to muscle and supports body but functions to make the body move. Moves voluntary. Location: Throughout the body Multinucleate: Long, cylindrical cells Striations: Fine black lines running perpendicular to the fibers In short: long straight cells, striations, multiple nuclei Cardiac muscle tissue: cells divide and converge, one nucleus per cell, striated, with intercalated disks, works involuntarily, functions to propel blood through the circulatory system Location: In the heart Unlike skeletal muscle their cells are uninucleate meaning there is only one nucleus Intercalated disks: hold muscle cells together during contraction and contain pores for electrical and chemical signals to pass-through one cell to the next In short: Striated, one nucleus, branching structure Smooth muscle tissue: Short tapered cells, but no striations. Moves involuntary. Function to squeeze substances through a contraction. Location: blood vessels and hollow organs in the digestive and urinary tracts as well as the uterus The difference from the other two muscle tissues: No striations In short: Uninucleate, packed together, no striations

[@interstellar0001]

Damn did u write these yourself? Thanks tho

[@victoriameconi1920]

Yes I did (: and no problem!

[@mochihelios2515]

Thank you💖

[@brunomartel4639]

bless you and hank green

[@hannahholt3845]

dude this is god tier thank you

[@adelsarhan770]

I’ve left my trade of 10 years to start university again, I was a plumber. I’m 29 now. I’m embarking on a 7 year journey to become a doctor of medicine. I will be starting my first trimester in 3 weeks, thanks for sharing the knowledge in such an easy way.

[@merzymaiya]

atom= letter cell= word tissue= sentence organ= paragraph organ system= page body= book

[@Aquariuswonder86]

Perfect analogy😀

[@sarahriddle499]

There should have been "molecule" after "atom".

[@baconandeggsmike5401]

Maiya F Atom=Letter Molecule=Word Cell=Sentence Tissue=Paragraph Organ=Page Organ System=Book Body=Book Series

[@amguruprasath8037]

Mind ?

[@thegaspatthegateway]

guru prasath Mind is the reader. The one experiencing and forming a mental image

[@sophiaann1765]

I wish I was an amoeba. People wouldn't expect me to socialize or have a job or get an education.

[@mitchellcummings758]

Sophia Ann how’s it going 4 years later

[@noorjamshed159]

Best comment ever even after 4 years ..

[@thahirshibu5042]

but you wouldnt get internet either

[@sophiaann1765]

4 years later and I didn’t go to college, am a stay at home mom and don’t leave my house. I did it. I’ve reached amoeba status.

[@Angel-ih4wo]

Are you happy?

[@TheGeekyAsianBoy]

Only CrashCourse can make an amoeba cute.

[@plankton67js]

+HilariousPoo Credits go to the minds in Thought Café :)

[@queensaharaice7376]

Ikr? Lol😆😅😄😍

[@queensaharaice7376]

+William Ritzler Lol

[@Estarile]

+HilariousPoo But Amoebas are naturally cute...

[@cassandracarter3505]

I'm pretty sure amoebas are just cute ingeneral

[@Repzion]

How does he speak so fluently? I love how he speaks, does he have a script?

[@CenterJoseph]

yes

[@gabrielcornea9119]

He edits heavily too.

[@learningftw6559]

He has a very strict script. And it's edited.

[@shred567]

I'm assuming that it's scripted and edited. In addition, I believe he understands the subject matter very well.

[@harrisonadler9987]

Hey Rep. Had no idea that you were into CrashCourse

[@JamesRoyceDawson]

so, I want a plushy of that amoeba from the beginning now.

[@JillH1995]

Thought Cafe/DFTBA could make a lot of money selling plushies of different CrashCourse things. I thought the same thing about the neuron.

[@AtticusAmericanus]

I would commission it, but I don't think the store takes Denarii.

[@toastysplox5338]

I make organ/cell plushies. Also made a pattern for a hanklerfish. I could make an amoeba. ^_^

YES! It is so cuuute!

[@learningftw6559]

I would take the brain from Crash Course Psychology, too.

[@shaleighmaxwell6649]

Thank you so much Chrash Course! I am a pre-nursing major and I just started my A&P course. I'm going to tell all my classmates about this. And thanks for helping me get through Bio 103 in the fall. I made the Deans List.

[@reginamccants1352]

Neato! Wished I had this course to review in the middle 1970's!😊 S. D. Bishop State College had a very loyal brilliant scholar who taught A&P Dr. Mitchell who teaching style reminders me of this presentation! Enjoyed! Thanks for sharing Shaleigh! 👒Regina Hart McCants

[@reginamccants1352]

Congrats on making the Dean's List!😊

[@jessykaros]

Shaleigh Maxwell i hope you’re a nurse now! congratulations!

[@LaurenTicole]

Shaleigh Maxwell exact same!!

[@MrThebeast115]

I'm taking this course now and its a lot to take in.

[@dudersmart]

I love the crash course videos, hardly ever paid attention at school, and now in my mid thirties i have decided to learn about a lot of things I knew nothing about. Brilliantly delivered, genuinley engaging and interesting, you guys should be proud of these, thankyou so much for putting all of these up!

[@Codiliabra]

dudersmart honestly, I'm glad I'm as young as I am. I have these videos to help me with classwork.

[@Tiff4322]

your videos are helping me pass A&P.. thank you..you are the modern day Bill Nye💚💚

[@nnekababy]

Yes! I've been trying to put my finger on it! R #BillNye

[@Tiff4322]

now I've

[@Tiff4322]

now I've bragged about him in class just to find out Bill Nye is his brother. Since watching these videos I have maintained a B in A&P

[@nnekababy]

Hey...I guess it's in the genes! :-)

[@xivleslie]

Hank's brother is John Green..are we talking about the same people?

[@epistax4]

For me, I'd love more quizzes throughout all of these Crash Course series. I'm well done with my formal education and sometimes after I watch these videos I find myself wondering if I actually learned something.

[@BalletCrazy2012]

Dear Crash Course, You guys should make a series of flash cards that include the graphic slides already included in the videos, but just all nice and done with lamination! For example at 1:39, that could be a flash card. The different positional terms from last week could be flash cards, etc. It would really help to memorize them and y'all could use the revenue to help fund the videos! You already have a store set up, so why not add something like this?!?!?! Really hope you make these, I will be your first customer!!!!!

[@learningftw6559]

Yes, that would be really useful! I'm totally for that.

[@SE-xg2pi]

They would probably wound up making online versions of the flashcards.

[@longlivelemmy7733]

TheFestiveBAMF i am making them

[@sophieklyber1063]

Yes!!!!!!!!!!!!!!! I totally agree! Thanks for coming up with this! (I'm, a flashcard person!)

[@tomasgonzalez4072]

Someone could make it on Quizlet or such as a public service and help to these guys.

[@KaydenF901]

I love how chill he is when he is talking about the amoeba. Like "Yo dude, check out this amoeba..... Pretty cool"

[@suluzah]

I really appreciate these subtitles. A) it makes it a lot easier to watch in class and B) is very helpful when my Spanish-speaking grandmother asks what I'm watching

[@bobhope4288]

This video was not very informative, I watched this whole episode and I still can't tell the difference between store brand and kleenex tissues, I hope you cover those tissues in part 2.

[@paulaesanchez]

I see what you did there. lol.

[@AndyQ191]

@@paulaesanchez 4 years later

[@tanyag38yearsago33]

@@paulaesanchez youre slow.

[@juanitaw156]

lol.

[@AlexTheMary]

Omg that nerve cell at 5:40 is freaking adorable!

[@thesk8erdav]

sat here waiting for 3 hours for this. YAS

[@azXIXza]

you are not alone so dont feel bad... or should we both feel bad?

[@thesk8erdav]

LillaSkogen​ I feel bad. I'm crying. I need a _tissue_

[@TheMinelight]

***** *slow clap*

[@mauricelewis3881]

***** You can actually italicise text in KZbin comments using an _underscore_ before and after the text, in case that's what you wanted to do with .

[@thesk8erdav]

Malte-Maurice Dreyer thanks I saw my method didn't work. I used the regular HTML code hoping it would execute correctly

[@UserName-ii1ce]

Neurons5:33 Nervous tissue 6:10 Muscle tissue7:00

[@rohan5753]

Thanks crash course to give this type of knowledge for free in a such beautiful way

[@Spectrumability]

The thing about organs that fascinates me (as a paraplegic) is how some functions are autonomic and others are not. I call them "no-brainers" because they act without the brain saying anything. For example, even though I don't have feeling of much of my lower body, my kidneys still function, my intestines still do their thing, etc. The human body never ceases to intrigue me. Thank you for letting everyone know about how fascinating we all are. :)

[@jameswhyte1340]

Pllllleeeeeassseee do a crashcourse on physics! That would be amazing!

[@MGTOW_Modality]

Newtonian, Quantum, and M-theory... all the good stuffs!

[@armorsmith43]

They should get Neil deGrasse Tyson to do it

[@ncypark8766]

I read "short tapered" as "short tempered" and I was so confused as to why these tissues get angry so easily HAHAHAHAHAHAHAHAHAHA

[@emmabrown1270]

I am currently in anatomy and physiology in college, this is more helpful than the actual lecture

[@cudamalloc9054]

Give this man a cookie.

[@Likeeey123]

I would just like to thank Hank and Thought Bubble and everyone involved in making this. I'm a GCSE student so I don't need to learn this stuff for any exam but all crash courses have proved a wonderful way to feed my curiosity. This series is already my favourite and I'm so excited for the rest of the episodes!

[@smssuper]

the best thing about these series is that they are animated and presented in humorous way.. thanks

[@Annababy575757]

This is so helpful

[@davidndiulor8428]

Are you famous?

[@Jadelovesjupitar]

+David Ndiulor yes she is

[@danny6228]

That is a lot of subs

[@wazowski5296]

I agree.. :)

[@markrega]

Cheers for the Video clip! Forgive me for chiming in, I would appreciate your opinion. Have you researched - Laophiaa Cranial Blueprint (google it)? It is an awesome one of a kind guide for mastering human anatomy and physiology in 3 days or less minus the normal expense. Ive heard some extraordinary things about it and my mate finally got excellent results with it.

[@Cwn179rw]

I’m trying to refresh my memory for the next semester. Thanks so much!

[@emilykruse8126]

these are so helpful for studying for finals thank goodness for crash course

[@Dylan-hx1oo]

As a First Year Nursing student in the PH, this kind of video is God sent for students who's studying A&P... Thanks CC!

[@goodnightroxella]

I’ve subscribed to your videos. For someone who struggles with textbook book learning, watching your videos with great visuals and to-the-point facts help recap so much. I’ll be rewatching again when I’m accepted into nursing school!

[@kinkose1]

The pop quiz was pretty helpful for me. Makes you actually recall the information instead of just digesting. Haven't seen any other CC videos with them, so I hope this is the first of many.

[@XavierGuillaume]

Thanks for the video. I covered the chapter on tissues in my A&P book, and it bored me to tears. But the way you explain tissues, they feel so important. The building blocks of all our organs. Neat stuff!

[@smithmeister3]

Just finished the CC Biology course - it was great, but I have to say I'm impressed with how CC has stepped up the animations since then. Nice work, they make a huge difference!

[@FlyingJetpack1]

I just love how crash course teaches. I wish school would link us sometimes to these kind of videos :)

[@thesk8erdav]

my school watches crash course APUSH sometimes

[@FlyingJetpack1]

***** I envy you..

[@joshpls]

+FlyingJetpack1 I'm at school right now watching this.

[@annayo319]

Dear CrashCourse guys and gals, with this beautiful series of videos i shall go take my histology exam in university. I went trough this with my own histology textbook in hand while repeating and translating information and i am really thankfull that mediums like this exist and i swear to whoever is listening that you explain it better than any book ever can. Thank you, keep up the amazing work ^^

[@guyonacomputer1261]

Crash Course has taught me more than any educational institution. Fuck yeah Anatomy!

[@lawrencium4101]

Hey! You guys have saved my exams and my life lol. I really think you should totally write a book on these crash courses, it'd be literally the only KZbinr book I'd buy 😌💓💓

[@rachaelcrain2912]

I love watching these videos! The animations and examples help me remember and understand the material better!

[@sdegueldre]

Dear Crashcourse animators, hank's colon in the intro has waves left to right when they should go right to left, it's not much but when you're teaching science, better do it right ;) CrashCourse

[@Thought-Cafe]

You are indeed correct. Thanks!

[@matiaselizalde7051]

(you could just say the animation flpped 180°degrees ;D) LOL! Hank colon

[@Tomyb15]

What are you talking about? I can't find them.

[@OopzyDayzy]

Ciroluiro watch the large intestine. maybe hank's animation had an enema.

[@thevirtualjim]

Hank has situs inversus ;)

[@foreverwantingpie]

I'm excited about this series !! I've never learned about anatomy or physiology specifically and it interests me. Nice video

[@Juliet99]

hundreds of pages worth of content in just 10 minutes! I needed this in my life!

[@MissCrazyNinja1]

yall are so great and so helpful!! Can yall make a crash course for microbiology? please????

[@manueld3534]

Wanted to say thank you and I think you all are doing a great job. Thank you so much for all of your work and making learning fun!

[@geoffreysender7759]

I wouldn't mind seeing an episode on muscles, where you talk about the different muscle groups, what they are made of(ie fiber types), how they work(ie when you work out what happens) and so much more

[@shawnelmore2415]

Thank you crash course. Thank you for slowing down. I will be supporting.

[@salvatauren]

awesome, just finished bio class and taking physiology next, these vids has really help, thnks for the great work

[@Nescnobody]

The things that I like most about this video series is that it's not only a lecture. They are pictures and animations which given visual and I'm very much a visual/tactile learner. Thank you

[@LittleAyahandToshplayshow]

Watching this for many times. Who’s here 2019? ✅💚💜💜

[@tobiasbrisa13462]

MEEEEEEEEEEEE LETS DO THIS. I'VE BEEN DREADING THIS CLASS BUT IT'S TIME

[@natalievaldez570]

Hank's my favorite

[@BlakeNordstrom366]

I love how you included a mini quiz at the end! As always, great video. Thanks!

[@scoutmasterkb28]

I really liked the pop quiz after the lessons to make sure we fully understand the episode. I hope more videos to come with this feature, and a more in-depth pop quiz.

[@evanknowles4780]

Your cells are like wordsYour tissues are like sentencesYour organs are like paragraphsYour body is like a bookthat nobody knows how to read

[@tygonmaster]

+Evan Knowles And the world is like a library that is filled with a diverse and wonderful assortment of books that shape what it has to offer. ^_^

[@queensaharaice7376]

+tygonmaster And the world is a Tardis blue(😉😉😍) machine that holds that library and much,Much more inside.And the universe is the mad man(😉😉) that controles

[@queensaharaice7376]

+Milo curry *the Tardis(under what I did there😉😄...right?)

[@queensaharaice7376]

+Milo curry *u see what I did there...(stupid auto correct...😒

[@queensaharaice7376]

+Milo curry *And the Universe is a Tardis blue...

[@trendyyoutube3216]

I love this channel so much! Honestly SO helpful and very clearly laid out - keep making videos pleaseeee

[@georgiaparker7685]

Crash course has helped me so much to understand anatomy and physiology which has helped significantly to get through my diploma of nursing. We actually watch crash course a lot during class as well. Thank you!

[@YasminGoncalves1998]

I don't think you understand how many times your videos have saved me omg thank you SO much for doing what you do! 😭👏🏼🙌🏼❤️

[@moolchandpal9892]

F**k yu

[@Shangori]

Nicely done with the pronunciation! This dutchy is satisfied

[@LIFE-td5sb]

best ever thing cc has offered is A&P series

[@j21589m]

This is awesome, preparing for the Hesi!

[@RicardoMoralesMassin]

You guys make the world a little better with each episode. Thank you !!

[@colza1025]

This guy again, is just amazing. I was blown away.

[@fairysakuragi5242]

have waited for 11 years. Finally, I found this. Amazing!

[@cd902]

This was freaking awesome 🤣 thank you guys for all your work to make this video!

[@TheAxhol]

When hank speaks, sometimes it sounds like he's rapping.

[@tanyag38yearsago33]

Listen it at 1.75x

[@hermitcrab7474]

@@tanyag38yearsago33 SAME HAHAH

[@victoriadhooge1770]

This is Amazing! I will watch EVERY episode!

[@amandaswanberg444]

I now have the new goal of watching this entire series and taking notes so that when I take A&P I can breeze through it. This is literally what I do for fun...​ haha

[@snyuksel]

wow so good, I've been trying to read this topic on my anatomy book but I couldn't even progress a bit. It's hard to consantrate. I'm so glad that I've found your videos. Now I'm going to watch continuous parts. Thank you very much!!

[@TheHellKiwi]

It would've been nice if you actually used real pictures of stained muscle cells for the quiz, would have added a bit of challenge, I actually got them right because of visual memory rather than analysing them. Great video though! As always!

[@savitar2468]

Best Teacher Ever ; Fast, Concise on point just amazing 🤗🤗Thanks Hank!!

[@brittainelswick1091]

The crash courses are super helpful. This is the perfect way to help me, as an adult, stay engaged (which was always very hard for me to do during school). It's nice to be able to have access to this and develop my craft as a coach. Also, is Hank seeing anyone lol?

[@kacitaylor6338]

CrashCourse is so amazing thank you for making these videos! I don't have access to other A & P courses and this is just awesome.

[@ambotak99]

Why does this guy know a lot? And why is he so good in teaching? I wanna be like him someday

[@tramnguyen0000]

do you know he's also a romance novel writer? its not even related haha

[@ambotak99]

@@tramnguyen0000 whoah seriously?? That's very impressive

[@tramnguyen0000]

@@ambotak99 oh my mistake. That's John Green, his brother, who also hosts some crash courses. This guy is Hank Green and apparently he writes books as well but not novels.

[@ambotak99]

Have you tried reading one of his novels?

[@tramnguyen0000]

@@ambotak99 i read The Fault In Our Stars. I didn't like it, though

I love Crash Course and Thought Café. Man, learning is fun! ♥ Learning so much about anatomy makes me want to tend after my body very well knowing that it is doing so much for me.

[@richardlongstaff4545]

Literally in love with your videos. Sat on a tablet in a room full of books.

[@RBuckminsterFuller]

I'm such an idiot. I saw the video title and thought it was a video about paper tissues or something, took me until half an hour later when I looked through my sub box again to realize it was A&P!

[@bdpatton2]

Me too lol

[@only20frickinletters]

The real tragedy is that they didn't make a single tissue pun in the video. I'm disappointed.

[@zizkazenit7885]

Me too! I think it would actually be really interesting to learn about the transition from handkerchiefs to tissues and how it affected public health.

[@MakeMeThinkAgain]

Thank Goat I'm not the only one who came here to see what Hank could possibly have to say about Kleenex.

[@Bellatrix1207]

That's exactly what I thought it was as well

[@WeasleyLover56]

The animations are so cute!!!!!!!

[@brookegarrett7742]

Love this guy! I could listen to him for hours.

[@KayzElizabeth94]

never stopppp educating us ! this is great

[@rebeccaduncan1029]

As a student, is there any chance you could incorporate actual slides into these videos? Sadly real life doesn't look like your beautiful cartoons. Great stuff though, hope you go more and more in depth so I can use these to revise! :)

[@tanyag38yearsago33]

These videos are rather too long to revise. You should try making notes in your free time. Watching these wouldnt help to revise.

[@iluvpinkandgold]

SURE WOULD HAVE BEEN NICE TO HAVE THIS WHEN I WAS AN A&P :(

[@defnotezy]

so this video is 8 years old, i’m so glad i found this account, this is really helpful!

[@simonastoynova7813]

hey, i just wanted to leave a simple thank you for the effort that you put in all of your videos

[@mblaqminoz]

THIS IS HELPFUL and you make it in a fun, colorful way to learn. thank you so much.

[@rafrafiko12]

Spécial thank's from Algeria, keep up the good work :D

[@maisiewhite6194]

I love this channel. I only found it today and have already learnt loads!!

[@3monsters014]

preping for next semester flash cards are great but videos help break it up in an entertaining way.

[@The_Everion]

La calidad de animaciones hacen que aunque el contenido sea superficial sea muy fácil de entender y aplicarlo para aprender un contenido más específico.

[@sophiapruett]

THANK YOU

[@lexi_sciace90]

This helped out a lot to refresh my memory of my Anatomy related papers in my Nursing degree :)

[@jenniferbahena9798]

I'm literally in love with this channel😍. Don't stop making videos! 💯

[@gyspelee1862]

this teaching is better then my teacher 😂 I need this for a test

[@moolchandpal9892]

Hi

[@moolchandpal9892]

F**k yu🖕🖕🖕🖕

[@Jhopemmaa]

9:42 "give yourself a pat on your superior posterior medial skeletal muscle" soooo... the back of my neck??

[@jaziybabe]

Im taking A&P this quarter so this series is timed perfectly :D

[@happysamoan97]

Thank you so much for this new series!

[@Yashpandey467]

as the video started I thought I heard "chicken Justin Bieber"😂😂

[@heyysimone]

hahahaha 😂

[@Stmpnqueen]

👏🏾😂

[@lisamishima8778]

the best thing about crash course is that I just binge-watched like 50 episodes and I don't even feel guilty because it's educational. But they are just so damn addicting I don't really know why

[@cheezlebee]

Loving the anatomy and physiology! But please for the love of my exam marks do a physics series!

[@brucefrizzell4221]

Thank you very much for the subtitles . Very helpful because I am learning French and German .

[@Salokin92]

And here I was thinking this somehow relates to handkerchiefs. Gosh I feel stupid.

[@hanswurst2972]

Hahaha, me too!

[@FraserSouris]

Tissue: Latin for "Woven"