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

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Published 2015-08-03

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

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All Comments (21)

@crashcourse 3 years ago

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 years ago

Passed my first anatomy class, and now you're making life easier for A&P II. We appreciate you Hank! (and team)
@nicktekula4928 7 years ago

Honestly the best page on youtube for all students around the country. And the world for the matter
@alyssawinters6632 5 years ago

You know you're too deep into crash course when Hank starts getting more attractive as the semester goes one.
@crimbleland 1 year ago

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!
@Daywalker777r 8 years ago

the human body is like one awesome team with a terrible captain at least for me
@blackmesa232323 8 years ago

Watching this is a bloody good time. Hank almost red my mind.
@skizzler1232 4 years ago

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 years ago

Crash course is the best channel on YouTube for students like me. They really make things easier to understand and thank you 😊
@heathercarter1297 5 years ago

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.
@MarissaLaipsker 1 year ago

Thanks for helping me and all of my fellow nursing students pass A&P
@pereiramariana35 8 years ago

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
@aaronhughes1815 1 year ago

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!
@DuranmanX 8 years ago

I'm guessing all the dislikes are coming from Crips
@horiadinu8895 4 years ago

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
@HowToMeetSweet 10 months ago

Crash course is the best channel, if not one of one ! 😮
@whatsinaname7289 5 years ago

1:50 "... a part of you that is literally irreplaceable!" goosebumps JUST AMAZING INTRO!!
@meganduckett4372 7 years ago

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 8 years ago

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
@lienia83 7 years ago

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