Blood Vessels Flashcards
1
Q
where do arteries carry blood from and to?
A
away from heart into arterioles
2
Q
what do arterioles control?
A
blood flow from arteries into capillaries
3
Q
what do capillaries link?
A
arterioles to veins
4
Q
where do veins carry blood from and to?
A
blood from capillaries to heart
5
Q
name five structural features that blood vessels have in common
A
- tough outer layer
- muscle layer
- elastic layer
- thin endothelium
- lumen
6
Q
what is the purpose of the tough outer layer?
A
resists pressure
7
Q
what is the purpose of the muscle layer?
A
contract and control blood flow
8
Q
what is the purpose of the elastic layer?
A
stretch and recoil to maintain blood pressure
9
Q
what is the purpose of the endothelium?
A
smooth inner lining to reduce friction and thin to allow diffusion
10
Q
what is the lumen?
A
central cavity of the vessel where blood flows through
