Blood, Part 1 - True Blood: Crash Course Anatomy & Physiology #29

Рет қаралды 3,743,517

Күн бұрын

Now that we've talked about your blood vessels, we're going to zoom in a little closer and talk about your blood itself. We'll start by outlining the basic components of blood -- including erythrocytes, leukocytes, platelets, and plasma -- as well as the basic process of hemostasis that stops bleeding, and how antigens are responsible for the blood type that you have. By the end of this episode, you should be totally prepared for your next blood drive.
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: Let's Talk Blood 00:00
How Blood Donation Works 2:00
Blood Components: Erythrocytes, Leukocytes, Platelets, and Plasma 3:00
Plasma - Electrolytes 3:38
Plasma Proteins 4:03
Hemostasis: How Bleeding Works 4:30
Antigens & Blood Types 6:21
Review 9:05
Credits 9:32
***
Crash Course is on Patreon! You can support us directly by signing up at / crashcourse
Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:
Mark, Jan Schmid, Simun Niclasen, Robert Kunz, Daniel Baulig, Jason A Saslow, Eric Kitchen, Christian, Beatrice Jin, Anna-Ester Volozh, Eric Knight, Elliot Beter, Jeffrey Thompson, Ian Dundore, Stephen Lawless, Today I Found Out, James Craver, Jessica Wode, Sandra Aft, Jacob Ash, SR Foxley, Christy Huddleston, Steve Marshall, Chris Peters
--
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Пікірлер: 946

@crashcourse 4 жыл бұрын

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

@yesicahernandez5846 6 жыл бұрын

Passed my first anatomy class, and now you're making life easier for A&P II. We appreciate you Hank! (and team)

@nicktekula4928 8 жыл бұрын

Honestly the best page on youtube for all students around the country. And the world for the matter

@somaliyahh 7 жыл бұрын

Nick T world*.

@toba6919 6 жыл бұрын

JUP! watching from Holland and probibly saved me from a 3 (F)

@toniaa-y3559 6 жыл бұрын

I'm in West Africa and this is the only reason why I am not lost in class

@thousandsummers134 5 жыл бұрын

Yup, I'm in Thailand. Crash course has saved me in soooo much.

@yashasvipurohit6910 5 жыл бұрын

India here...this awesome channel has spread far n wide

@crimbleland Жыл бұрын

Coming back to thank Hank years later. I now work in healthcare and so much of my basic knowledge I’ve learned because of this crash course. Thanks Hank!

@alyssawinters6632 5 жыл бұрын

You know you're too deep into crash course when Hank starts getting more attractive as the semester goes one.

@skizzler1232 4 жыл бұрын

Cut appears* Bacteria pops up: are you ready to die you cell?!? Platelete: Hold my coagulation factor T-cell: am I late to the party??

@nasrinn812 7 жыл бұрын

Crash course is the best channel on KZfaq for students like me. They really make things easier to understand and thank you 😊

@Daywalker777r 8 жыл бұрын

the human body is like one awesome team with a terrible captain at least for me

@lycheemyusic 4 жыл бұрын

LOL tru

@moyopengu7021 4 жыл бұрын

lol

@ricchburglar 4 жыл бұрын

here take my money 💰x300

@atiquakhan3218 4 жыл бұрын

Your profile is the expression for this

@heathercarter1297 6 жыл бұрын

Just wanted to say thank you for your videos! I started watching your videos in 2015 when taking prereqs for my RN. Now I am graduating next week! You've helped alot with concepts.

@pereiramariana35 9 жыл бұрын

my mother was rh negative and i was her second child with rh positive, they didnt know until i was born and i had to have blood transfusions as a new born, im so glad this was so well explained, i myself had a hard time understanding and explaining this to people, you guys are the best :3 love from a positive, who still doesnt know her blood type other than it being rh positive

@iwanebbing4944 9 жыл бұрын

***** why suing...? You don't know her (i assume she's a she) age. The prevention of giving anti-RhD to RhD negative mothers with RhD positive baby's is not that old...

@blackmesa232323 9 жыл бұрын

Watching this is a bloody good time. Hank almost red my mind.

@kitsunekyubino9345 9 жыл бұрын

blackmesa232323 You should go to the _pun_ itentiery.

@UzumakiNaruto-ez8jc 9 жыл бұрын

blackmesa232323 Didn't I tell you puns run in my *blood*. Be *A positive* part of the pun community and tell the others I'm the king, also tell them not to *B negative* about the new blood dynasty. Failure doesn't run through my *veins*. Where the *bloody* hell are my pun fans? You *aorta* be a fan too.

@blackmesa232323 9 жыл бұрын

Uzumaki Naruto claps.

@guyshepard9658 9 жыл бұрын

Puns aren't funny your efforts are in vein.

@UzumakiNaruto-ez8jc 9 жыл бұрын

Guy Shepard You don't have the heart to continue.

@aaronhughes1815 Жыл бұрын

Passed my first anatomy class with the help of these videos and I’m currently crushing A&P II. If you’re struggling just keep watching crash course!

@thelinsey09 5 жыл бұрын

I may be 4 years late saying this... but my curiosity about my low white blood cell count lead me to your videos. Your explanations and visuals really help me understand everything. Thank you so much.

@horiadinu8895 4 жыл бұрын

I rather pay double my tuition to this guy and his family rather than my professor.. He's getting me through Nursing school, this man needs raise my word

@DuranmanX 9 жыл бұрын

I'm guessing all the dislikes are coming from Crips

@barrymaguire4535 9 жыл бұрын

***** Come on people, that deserves more thumbs up!

@WWZenaDo 9 жыл бұрын

***** Ha, ha, Funnneeeee....

@elstormcaller 9 жыл бұрын

***** Well played

@markvalebcia8750 9 жыл бұрын

I dont get it Crips???disable people

@elstormcaller 9 жыл бұрын

Mark Valebcia No, dude, its the name of a gang, their worst enemy are the bloods, geddit? The haters of the Bloods are the Crips?

@rohithr3072 4 жыл бұрын

Don't read this you have got a lot of studying to do...

@MarissaLaipsker 2 жыл бұрын

Thanks for helping me and all of my fellow nursing students pass A&P

@whatsinaname7289 5 жыл бұрын

1:50 "... a part of you that is literally irreplaceable!" *goosebumps* JUST AMAZING INTRO!!

@racheljones7339 6 жыл бұрын

CRASH COURSE YOU ARE A SERIOUS LIFE SAVER!! This channel makes anatomy interesting, easy to understand and even fun to learn. Thank you so much, this helps so much in my anatomy class.

@meganduckett4372 7 жыл бұрын

This channel helps me so much with my anatomy and physiology tests. Hank goes over a lot of key points that my instructor did, and he explains it a little better to be honest.

@NathanAndRose 9 жыл бұрын

Interesting fact: while the AB and Rhesus blood groups are the most common blood types for consideration with blood transfusions, there are actually dozens of different blood type groups, that all measure different things. For example, an individual can be AB, D positive, and at the same time M and N positive (MNS system), K positive (Kell system), Le^a or Le^b negative (Lewis system), and so on. ...It took me forever to memorize all of these in school :/ haha -Nathan

@FrozakRL 6 жыл бұрын

Nathan Hutchcraft thanks Nathan haha found this interesting even though I'm commenting late :) hope your doing well

@shivanishastri4285 6 жыл бұрын

Nathan Hutchcraft me too, we were tested on this with so much more! Was this in med school?

@ericacuevas2301 5 жыл бұрын

How did you make this so easy? We've been going over this for weeks and it all makes sense now. THANK YOU! When I'm a pharmacist and not eating ramen I will support crash course forever

@TheCalm25 9 жыл бұрын

I watch every single one of Crash Course's videos, and have for a couple years now. I want to say how absolutely expertly these series' are done. I would never, ever want to listen to anyone tell me about the things I learn on Crash Course. But the hosts of each of the series' have such a critical sense of not sounding arrogant nor condescending. I don't know how the group got together, but it's one of the very rare instances in human kind's history which will remain mysterious as far as how such a truly extraordinary group of people (each absolutely extraordinary and forward thinking in their own personal way, and through their own individual lives) found each other, chose to each make a go of this, and came together in such a cohesive, consistently unique, genuine, and somehow entertainingly knowledgeable way.

@omranhashim1028 9 жыл бұрын

I didn't think I'd learn much because I usually get lost with all the words in biology. But this is actually very well taught. Thank you team Crash Course

@angelofhope7778 6 жыл бұрын

This channel has gotten me 87% on my anatomy physiology exams. Thank you so so much crash course!! My number 1 study tool!

@helixentertainment5890 4 жыл бұрын

This literally summed up the entire 2nd chapter of my textbook for my Anat Phys 2 class.

@hannahjackson6860 5 жыл бұрын

You are the reason I have a 99% in my anatomy& physiology class right now. Thank you so much for your videos!

@iLov3makeupx 7 жыл бұрын

Why am I paying thousands of dollars for a college course when KZfaq teaches better..

@palashgupta3521 9 жыл бұрын

Just one word AWESOME...AWESOME...AWESOME... Plz make videos for Physics and Chemistry as well... Thanks a lot TEAM CRASH COURSE...

@mjay3514 5 жыл бұрын

I am officially a fan ... You've acquired a new subscriber! Thank you for this great information!

@lienia83 7 жыл бұрын

This program is so awesome! Has gotten me through some tough concepts in my Ana, Phy, and Chem classes

@deemon710 9 жыл бұрын

I've heard the different kind of blood types described several times before but I never quite grasped it until this video with it's very helpful visual aids. Thank you.

@SyedHousein 8 жыл бұрын

The white blood cells carry the Master Sword!

@ria_artsymw1841 7 жыл бұрын

Doctor Syed believe in your strengths, believe...

@justinlansford3910 6 жыл бұрын

There can be only one!!

@bmsenpai8386 5 жыл бұрын

I cracked up when I saw it lmao

@probablyapossum 8 жыл бұрын

Did that white blood cell have a master sword? I HAVE MASTER SWORDS IN MY BLOOD

@smooshfanultra 8 жыл бұрын

+HeroHeart14z Actually, white blood cells use magic to attack, you idiot.

@PsychoDiesel48 8 жыл бұрын

+XXX_ “SANIC” _XX NO ONE, FUCKS . . . WITH THE WHITE MAGE! XD

@smooshfanultra 8 жыл бұрын

Diesel Marcus What's wrong with black mage? You racist.

@PsychoDiesel48 8 жыл бұрын

XXX_ _XX it was a quote chill XD

@smooshfanultra 8 жыл бұрын

Diesel Marcus That's sexist.

@HowToMeetSweet Жыл бұрын

Crash course is the best channel, if not one of one ! 😮

@lavishdabas9549 5 жыл бұрын

I visited this channel for the first time and now i can say that it is the *bestest* video i watched today

@kaboom138 8 жыл бұрын

Did anyone else notice Rasputin at 6:10 when Hank was talking about hemophilia?

@marinescastellanos6157 8 жыл бұрын

OMG TOTALLY XD

@jerzymajka9460 7 жыл бұрын

I thought exactly the same thing. Has anyone noticed Rasputin and does someone know what he has in common with hemophilia?

@marinescastellanos6157 7 жыл бұрын

Jerzy Majka Hey! So Rasputin was a holy man who became associated with the Russian royal family. The tsarevich, Alexei had hemophilia, so Rasputin was called in to heal the prince. It worked, the prince felt better and so from then on Rasputin became a recurring figure in the royal family, which was VERY controversial at the time. XD

@jerzymajka9460 7 жыл бұрын

Thank you for explanation :)

@marinescastellanos6157 7 жыл бұрын

Jerzy Majka Al No prob 😋

@butterlover7592 4 жыл бұрын

3:16 like the master sword. You can even see the triforce on it.

@nicolemcdonald9231 5 жыл бұрын

Idk what it is but whenever I get sleepy studying all I have to do is look up a Crashcourse video and it wakes me up and gets me pumped to study some more!

@amytesch3880 5 жыл бұрын

Ive never watched all the way through the end of any crash course video where he says who wrote the script and who he consulted so basically this whole time I've thought he was the smartest person on earth and knew a ton of random topics in depth

@Vipin-kq5mg 6 жыл бұрын

Thats the cutest WBC I've ever seen! 😁😁😁

@maryannvictoria4750 4 жыл бұрын

Totalmente impactada con la calidad de la informacion, la animacion y la accesibilidad. Gracias a todas las personas que hacen esto posible.

@matthewburress1 Жыл бұрын

Watching at .5 speed to increase focus and retention, but I am laughing so hard because it makes Hank sound like the worlds smartest drunk.

@Sproklye 9 ай бұрын

is that rasputin in 6:14?

@danpham8963 8 жыл бұрын

The Leukocyte with the Master Sword lol

@iamjacksusername85 8 жыл бұрын

thank you sooooo much for this video. I was having really hard time understanding blood antigens and their relationship with doning blood. This video saved my bacon!

@patriciacruz4105 7 жыл бұрын

Damn. Crash course is much more easier and faster to understand than the 4 hour lectures I have everyday for A&P2.

@QUICKFACTS247 Жыл бұрын

"its just a body" but if you know deeply how the system work.... truly God has put so much effort ❣️🥺

@whisper-hc5vx 4 жыл бұрын

When you’re watching in March 2020 where blood drives are shut down because of the coronavirus

@fortuna19 8 жыл бұрын

I love that little reference to Rapsutin when talking about blood clotting. I'm studying the Russian Revolution

@siddharthdasari6598 4 жыл бұрын

To add on, the endothelium is the single layer of squamous endothelial cells that line the interior surface of blood vessels and lymphatic vessels. Thank you for the amazing videos Crash Course! Great way to make use of the time I have on my hands right now.

@mohammadmokhtarrashedjibla4742 8 жыл бұрын

thank you for being here for us crash course you really made life much easier for us.

@anastaciafrizzell4885 5 жыл бұрын

Lol that leukocyte was holding a master sword 🗡 😂😍

@JohnSF93 9 жыл бұрын

O- here. been giving blood since I turned 18

@xxbeatuupzz 7 жыл бұрын

Anyone else's mind blow when he said blood was a type of connective tissue?

@christinevakas92 2 жыл бұрын

Ah, I'm at the end of my course - thank you so much for all these KZfaqs. You and your team have made studying a pleasure, actually had many laughs, and learned so much.

@Laske_smash 8 жыл бұрын

I like the fact that the leukocytes has the master sword from The legend of Zelda series

@themrkindmanful 7 жыл бұрын

The best man ever and the best show ever...for any student it is a time savier... thus mean MY life savier which end to be ..YOU my real hero. real thanks for you and also for donors thats keep it alive.

@sammisweeti26 5 жыл бұрын

This page saves my butt every week before my exams (i'm in an accelerated A and P program this summer and I'd flunk without this page). Thank you!!

@kurthaston3058 4 жыл бұрын

So lets say a person with type O+ blood donated blood to a person with type A+. Why wouldn't the A antibodies from donor's blood attack the cells of the recipient? Are the antibodies take out when the blood spins around in the centrifuge.

@99thTuesday 9 жыл бұрын

Was that Rasputin over Hank's Shoulder?

@rileydermanuelian7307 4 жыл бұрын

Four years too late, but the reason is because the Romanov family hired Rasputin, a holy man, to treat their son Alexei's (the heir of the throne of the Russian Empire) hemophilia. It worked, surprisingly. No one knows what he did exactly (he kept it secret because he wanted a reason to stay close to the family), but it is suspected that he removed something that was making him more ill (can't remember what) from his environment.

@sameerathreya9253 8 жыл бұрын

"The property of Hank!" Hah!

@helloshanaynay 9 жыл бұрын

This series has been so helpful to my summer class at Rutgers! Thank you!

@alex-ux3zl 8 жыл бұрын

+Shannsy 95 kik?

@Boognish2784 7 жыл бұрын

I completely love all of these A&P videos!!! They are really helping me and they are so entertaining!

@headpump 5 жыл бұрын

"now you're bleeding all over your breakfast.."

@caribbeanqt16 6 жыл бұрын

I like crash course but I think the host speaks too fast. I'm a slow learner so the rapid speaking kind of confuses me. Other than that, I really do appreciate this crash course :-D

@matthewhardwick365 5 жыл бұрын

Playback speed 0.75? Makes Hank sound like he was dropped as a child tho.

@robinclarke8736 4 жыл бұрын

Just slow the speed down easy fix, also try professor dave explains!

@NinjaDemon2481 4 жыл бұрын

Im form México I’m learning speak in English when I see your video my face says omg you speak very fast and need put video in velocity in 0.75. Also I’m PT I’m student thanks for video.

@sitihaurakhairani1121 7 жыл бұрын

definitely my hero for mention true blood haha! such a nice page for learning anatomy and physiology

@MelissaFlaquer 9 жыл бұрын

8:50 actually the antibodies from the mother attack the baby, not the other way around, in most of the cases. To answer the obvious question of why on the Rh group matters in the case of mother to fetus blood contact it is because the antibodies against ABO antigens do not cross the placenta but Rh antibodies do.

@AmandaLovesOldFords 4 жыл бұрын

I scrolled *so far* to find this comment!

@__RD14533 9 жыл бұрын

Brawndo - Its got what plants crave. Its got electrolytes!

@ChrisThomasBone 9 жыл бұрын

OwenBruch22 Water's what they put in toilets and I ain't never seen a plant grow out of a toilet!

@SusanWojcucki 9 жыл бұрын

Electrolytes are just any material that ionizes when dissolved in an ionizing solution (like water)

@bobhope4288 9 жыл бұрын

SubscribeToSyndicate You think Einstein walked around thinking everyone was a bunch of dumb-shits? Now you know why he built that bomb.

@SusanWojcucki 9 жыл бұрын

Bob Hope What?

@__RD14533 9 жыл бұрын

SubscribeToSyndicate They are all quotes from Idiocracy, it's a movie.

@GoudaGirl 5 жыл бұрын

Could I get the script? I really want to read and highlight certain parts. I find that I learn better that way.

@gqx576 5 ай бұрын

True Blood joke was top tier lol

@nordicrain 6 жыл бұрын

5:07 anone anone

@Bankstercide 9 жыл бұрын

"Your blood is the one component of your body that we haven't figured out how to reproduce synthesize or imitate." That's great. It might be more impressive once we've got a better handle on Immunology.

@nyx5939 4 жыл бұрын

I think he was talking about the brain there 😂

@Domdeone1 4 жыл бұрын

Jesus, the music at the end was a relief. The whole posting was like that voice-over that says terms & conditions apply at the insurance adds

@bumbuleetaaja 8 жыл бұрын

I was told in my biology class that universal recipient and universal donor have no meaning in the present as cases when different type of blood is transfused are very rare nowadays. But guess these terms might help to understand the whole concept better?

@sierraslaugh6071 8 жыл бұрын

Hanks hair tho

@zarnainsrequiem4677 4 жыл бұрын

Whos here at 2019?

@rachellanglois5223 4 жыл бұрын

yassss

@archeryskills5435 4 жыл бұрын

Meeeee

@teedtad2534 Жыл бұрын

Love videos like this with illustrations! 💵💵🫑💵🫑

@FrozenSoulz 7 жыл бұрын

This is way better than anatomy class

@4001Jester 9 жыл бұрын

Wondering how this is blood part TWO…

@truboo4268 9 жыл бұрын

***** No, because the thumbnail still says 'Part 1'

@Tomyb15 9 жыл бұрын

I've always been bothered by the concept of blood types. What are their real purpose? Because it seems that it only serves to identify foreign red blood cells and destroy them, but what practical purpose does it have? If I being O type receive B type, there is an immune response towards that foreign blood which is harmful to my body. But obviously nature wasn't thinking about blood transfusions when blood types evolved, so maybe if a little of foreign blood enters my body then the reaction isn't harmful (although I don't know in which scenario would this happen). But how would this be useful? I mean that having foreign red blood cells wouldn't be harmful, foreign bacteria and other pathogens would be, but those have their own antigens. So then what? Also it would seem that this system works towards other humans' blood only, since an O type has antibodies for A and B antigens, which would only be present on other people. And having the antigens certainly isn't necessary for our immune system to recognize our red blood cells since O type people live just fine. A final question would be how is it not a problem to transfuse O type blood. The blood contains antibodies for either A or B, so if either of them receive them, those antibodies will attack their red blood cells and should produce an immune response. So what's the deal? Does the immune response not happen or is O type blood always filtered of these antibodies?

@kimfischer7725 9 жыл бұрын

I may be too tired to understand most of what you are asking, but the last question is easy. Type O can donate to A and B because type O lacks any antigens. Antibodies are only present in the serum or plasma and most donations are packed red blood cells. Rarely is whole blood transfused. So in this instance you are only concerned with the antibodies of the recipient vs the antigens of the donor. Type A has B antibodies and Type B has A antibodies but it doesn't matter because there are no antigens on the surface of those red blood cells to react with those antibodies. Same reason type AB is the universal recipient. Since they have A and B antigens, they have NO antibodies, so they have nothing to attack antigens on the surfaces of any blood cell type.

@Tomyb15 9 жыл бұрын

Kim Bishop oh so most of the transfusions done are red cells transfusions. That makes sense because it gets rid of the antibodies problem. Thank you. The rest of my questions were a bit more abstract because they refer to the evolutionary advantage of having different blood types. I've been thinking about it and it may be because it may provide more genetic diversity that could help with diseases, since if a blood type is weaker to a disease, not everyone would be at risk. The problems with transfusions would be more of a side effect. I don't know. If later you can read it again and possibly understand what I said and give me your thoughts, I would greatly appreciate it. :)

@iwanebbing4944 9 жыл бұрын

Kim Bishop Don't forget the Fy(a-b-) in Malaria aswell :-)

@chillsahoy2640 9 жыл бұрын

Ciroluiro From my non-specialist understanding, the blood types are just a chance consequence of the antigen-antibody system. We evolved antigens and antibodies capable of detecting non-native antigens as a way of protecting ourselves from foreign bodies. Once that system was in place, it continued to evolve and diversify into many different kinds of antigens and antibody responses. So it's not so much that blood types evolved as a specific trait, but when we evolved antibodies, some of them happened to be specifically for blood cells, and as a consequence of that we got different blood types.

@kimfischer7725 9 жыл бұрын

***** Yes. I am a college instructor for the Medical Laboratory Technician program.

@lilmona1998 5 жыл бұрын

HE TALKS SO FAST! I LOVE IT

@INUTUTA 5 жыл бұрын

Ohemgee, simultaneously watching Crash Course Anatomy and Cells at Work is the most effective study habit for me ahahhhaha.

@animepug8159 6 жыл бұрын

cells at work brought me here

@darrenanimatic9675 5 жыл бұрын

No god please no NO NO NNNOOOOOOOOOO

@draconianking 9 жыл бұрын

O- Master Race reporting in

@cortster12 9 жыл бұрын

Michael Spencer Until you need a transfusion, and then you wish you were AB+.

@thecynic807 9 жыл бұрын

Where did you get this master race shit from

@yeahoh2222 5 жыл бұрын

*yeet in*

@isabelgallegos6294 5 жыл бұрын

I just love all of these videos! Very informative. Very helpful and well explained. Love it

@emperorjustinianIII4403 9 жыл бұрын

My enduring question: what is the evolutional value of having multiple bloodtypes?

@DanThePropMan 9 жыл бұрын

Blood trees would be freaky af... o.O

@lisabanks1015 8 жыл бұрын

Hank said "flavor" when he was referring to blood type...HA!

@Squidumsxo 6 жыл бұрын

Is no one going to mention the little Rasputin on his shoulder when he brings up Hemophilia? XD I had to pause the video I was laughing way too much.

@yakumofujii886 9 жыл бұрын

I'm not sure why but out of all the Bio Crash Course videos this one squigged me out the most. I don't think I have a blood phobia but I do have a needle one.

@finnmurtons8727 6 жыл бұрын

Hataraku Saibou OVA 1

@Abominatrix650 5 жыл бұрын

Red Blood Cell-chan - the only waifu who will ever truly be in your heart!

@14.huanle60 6 жыл бұрын

come here after Hataraku Saibou !

@CaptainSugarr 4 жыл бұрын

MAn of culture I see

@mohammedollie4712 5 жыл бұрын

The intro to this video made my day "don't take this the wrong way but your pretty replaceable" 😂😂😂😂 I love John soo much hahaha

@AlexanderWigmore 9 жыл бұрын

What is the cool little glass toy that has spinning things inside of it on the right hand side of screen, below and to the left of the lightbulb?

@MeepChangeling 9 жыл бұрын

Meh. We'll synth it sooner or later. That's a priority at like, a dozen big labs around the world. NBD.

@iwanebbing4944 9 жыл бұрын

Meep Changeling They have been trying that from the 70's onward... :-)

@cjt354 9 жыл бұрын

***** And now we have the capability to 3-D print hearts and lungs with the proper equipment. We're close to a medical, materials, and physical science revolution in some respects. In others, however, we might as well just not have that field of study.

@MeepChangeling 9 жыл бұрын

***** And look at how much tech has improved since then. Can't be much longer now. We can whip up a batch of stem cells perfectly tailored to any individual, and we actually did produce a cloned viable human embryo (though it was distroeid after 14 days for ethics reasons.). I mean come on, back in the 70's we had barely produced the CAT scan, let alone had time to use the data gathered via them.

@iwanebbing4944 9 жыл бұрын

+Meep ‘the’ Changeling No doubt we can. :-) It's more a question 'Why would we"... The fact that it can be done, doesn't mean it's cost effective in every case. Let alone the time factor in case of major trauma.

@vanessamercedes7675 7 жыл бұрын

okay truth be told now, since noone ever says it, those crash courses are WAY TOO FAST. i love them, so informative, but jesus, too fast, u dont even have time to read the little extra cool facts in the little boxes they legit pop up for like 2 seconds, why does the whole damn thing always seems so rushed....?? meh...

@zaneharman9522 7 жыл бұрын

Try pausing the video.

@rockanderson1823 7 жыл бұрын

Try rewatching the video and pausing. These videos are so chock full of information, I have to watch them multiple times to get the most out of it. He talks fast so as not to bore the smart people?

@eileenbvanmerk2700 7 жыл бұрын

it's not supposed to replace education (though in all fairness I watch these videos as a sort of refresher before reading my lessons) so I guess that's why

@EvangelineLovelie 7 жыл бұрын

Slow the video down in setting to .75 any slower and it sounds ridiculous but at this speed you can understand a little better.

@jamie694 7 жыл бұрын

Vanessa Mercedes capitalising on the ten minutes rule