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Flashcards in Circulation Deck (13)
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1

What are 3 types of arteries?

- elastic arteries
- muscular arteries
- arterioles

2

Arteries carry blood ____ ____ the heart.

away from

3

Veins carry carry blood _______ the heart.

toward

4

Capillaries are thin enough to allow for _____ _____.

Gas exchange

5

Venules merge to form ____.

veins

6

What are the 3 layers of arteries and veins?

Tunica interna (intima)
Tunica media
Tunica externa (adventitia)

7

Whats another name for the tunica interna?

intima

8

What's another name for the tunica externa?

adventitia

9

Which is the thickest layer in the arteries?

tunica media

10

Describe the tunica intima.

Made up of...
-simple squamous epithelium (aka endothelium)
- basement membrane
- internal elastic lamina

11

Describe the tunica media.

Made up of...
- circular smooth muscle
- external elastic lamina

12

Describe the tunica externa.

Made up of...
- elastic and collagen fibers

13

What is the thickest layer in veins?

the adventitia