7.4 the structure of the heart Flashcards
1
Q
why are blood pumps kept separate?
A
keeps oxygenated blood apart from deoxygenated blood
2
Q
what are valves used for?
A
prevent back flow of blood
3
Q
describe the function of AV valves.
A
prevent back flow into atria when ventricles contract
4
Q
describe the function of semi-lunar valves.
A
prevent back flow into ventricles when it relaxes
5
Q
what type of blood vessel is the vena cava?
A
vein
6
Q
what type of blood vessel is the aorta?
A
artery
7
Q
what type of blood does the pulmonary artery carry?
A
deoxygenated
8
Q
what type of blood does the pulmonary vein carry?
A
oxygenated
