blood /blood vessels Flashcards
1
Q
arteries have ______ walls to maintain pressure.
A
thick , elastic
2
Q
arteries have a __________ lumen
A
narrow
3
Q
veins have _________ walls
A
thinner
4
Q
veins have _________ lumen.
A
wider
5
Q
veins have _________ due to low pressure.
A
valves
6
Q
Capillaries are the ______ blood vessel.
A
smallest
7
Q
Capillaries have walls only _________.
A
one cell thick
8
Q
Capillaries only let ________ at a time.
A
one red blood cell through
