Circulation Flashcards
1
Q
What are 3 types of arteries?
A
- elastic arteries
- muscular arteries
- arterioles
2
Q
Arteries carry blood ____ ____ the heart.
A
away from
3
Q
Veins carry carry blood _______ the heart.
A
toward
4
Q
Capillaries are thin enough to allow for _____ _____.
A
Gas exchange
5
Q
Venules merge to form ____.
A
veins
6
Q
What are the 3 layers of arteries and veins?
A
Tunica interna (intima) Tunica media Tunica externa (adventitia)
7
Q
Whats another name for the tunica interna?
A
intima
8
Q
What’s another name for the tunica externa?
A
adventitia
9
Q
Which is the thickest layer in the arteries?
A
tunica media
10
Q
Describe the tunica intima.
A
Made up of…
- simple squamous epithelium (aka endothelium)
- basement membrane
- internal elastic lamina
11
Q
Describe the tunica media.
A
Made up of…
- circular smooth muscle
- external elastic lamina
12
Q
Describe the tunica externa.
A
Made up of…
- elastic and collagen fibers
13
Q
What is the thickest layer in veins?
A
the adventitia
