Blood Vessels, Part 1 - Form and Function: Crash Course Anatomy & Physiology #27

Now that we've discussed blood, we're beginning our look at how it gets around your body. Today Hank explains your blood vessels and their basic three-layer structure of your blood vessels. We're also going over how those structures differ slightly in different types of vessels. We will also follow the flow of blood from your heart to the capillaries in your right thumb, and all the way back to your heart again.

Pssst... we made flashcards to help you review the content in this episode! Find them on the free Crash Course App!

Chapters
Introduction: The Circulatory System 00:00
Blood Vessel Structure: Tunica Intima, Tunica Media, Tunica Externa 2:10
Types of Blood Vessels 3:44
Capillaries Structure & Function 5:25
How Blood Flows From Capillaries to the Heart 7:01
Review 8:39
Credits 9:03

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Pssst... we made flashcards to help you review the content in this episode! Find them on the free Crash Course App!

[Ameeno]

I wish this guy could take my test for me tomorrow lol ...

[omermagen]

It took Hank less than 10 minutes to do what my teacher haven't done in a year.

[Falleno]

Hank Green: A better professor than my actual university professor.

[mariannetouma]

Man... about 800$ per credit for a 4 credits physiology course at my university, and I end up self learning here (with more details from the book)
Such a waste of money :P
Thumbs up to the whole team, the videos are amazing! You'll have my forever gratitude if I get accepted in med school.

[razalrafeeque]

Mr. Hank Green, a very big thank you. I am a fourth year medical student that has forgotten all my basics over the break and this whole series is exactly what is giving me hope again and giving the bigger picture you often lose with inactivity. Thank you so much for all the videos over the years. From my A-Levels to my MBBS degree you have been there every step of the way!

[blackmesa]

This always serves as a great vessel for information.

[Thumbsupurbum]

"If you removed all the arteries, veins, & capillaries from a person’s body, and tied them end-to-end…the person will die."

-Neil deGrasse Tyson

[TrenTonStackZ]

Keep 'em coming guys... I got Nursing school coming up and I'd much rather refresh my A&P knowledge with these than reading long digressing chapters... Great work

[thestig]

I let the entire video play start to finish in an effort to get our beloved CrashCourse team full monetary benefits.
It’s the least we can do if we don’t donate to their patreon for helping us pass our class.

Thank you Crash Course!

[siddhantgoyal]

Hank Green, making nerd girls' blood vessels say hello since 2007

[juliaz]

I've said it before and I'll say it again: I love you and the wonderful content you make! Thank you!

[potzysk]

Is Hank the best lecturer in the world?

[jemima]

Who pauses the intro to read all the little facts? I do lol.

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I'm so glad these type of videos exist to help us visual learners!

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[mcmahonp]

Brilliant. All biology teaches should be this interesting. Thanks.

[Abominatrix]

I sat watching the end of this with my arm over the back of the chair. Now I can feel the circuit described in this video actually happening

[yungsloth]

Whenever I watch these videos I actually start laughing like, so much is happening inside me and I'm wondering what'll be for dinner lol

[YELLOGAMERS]

This is my all time favourite crash course ever. Love learning about how it all works out and how intricate our bodies are. Best channel ever.