16 Baroreceptor reflex in everyday life Flashcards
1
Q
What is the effect on ABP of standing up?
A
ABP rises a bit and then decreases
it will then slowly increase to normal again
2
Q
Why does standing temporarily increase ABP?
A
skeletal muscle pump causes vasoconstriction in the leg muscles, increasing TPR
3
Q
Why does standing decrease ABP?
A
venous pooling
4
Q
What is the effect of standing on HR?
A
it increases, and then levels out again
5
Q
What happens to SV when you stand?
A
it remains low, because venous pooling continues even if you’re standing
6
Q
What is the effect on cardiac output when you stand?
A
it increases temporarily
7
Q
what is the maintenance of ABP in the standing position dependent on?
A
raised TPR (maintained baroreflex, SNA increases peripheral vasoconstriciton)
