vascular shunt mechanism Flashcards
1
Q
what is vascular shunt?
A
redistribution of blood from “non-essential” organs to working muscles
2
Q
whats the percentage ratio
A
always 80:20
3
Q
what’s a arteriole?
A
connectors between arteries and capillary beds
4
Q
what controls blood flow to the capillary bed?
A
precapillary sphincters
5
Q
what do precapillary sphincters do?
A
vasodilate or vasoconstrict
6
Q
VCC
A
vasomotor control center inside the medulla oblongata
7
Q
what does the VCC do?
A
sends information to the sympathetic nervous system to either vasoconstrict or vasodilate
8
Q
increased sympathetic stimulation =
A
vasoconstriction
9
Q
decreased sympathetic stimulation =
A
vasodilation
