pressure changes in blood vessels Flashcards
1
Q
what causes the blood to decrease in pressure as it moves from aorta to capillary and venule
A
-increased surface area
-increased friction
-peripheral resistance
-blood slows and therefore BP decreases
2
Q
what are the fluctuations in pressure caused by in the aorta
A
-the pumping of the heart
3
Q
what is the process which maintains blood pressure in the artery
A
-artery walls close to heart have a lot of elastic tissue
-when blood leaves, walls stretch
-as blood moves on and out of aorta pressure drops
-elastic recoil of the walls helps maintain blood pressure
4
Q
why is it important to maintain pressure gradient between aorta and arterioles
A
-keeps the blood flowing towards the tissues
5
Q
A
