17: Arterial system distribution Flashcards
Where is the greatest resistance to flow
Arterial circulation
Physical factors determining characteristics of arterial pressure
Blood volume
arterial compliance
Physiological factors determining characteristics of arterial pressure
Cardiac output
Vasculature resistance
Short term regulation of arterial pressure
Venous return rate (arterial outflow)
arterial inflow
Long term regulation of arterial pressure
renal regulation
Decreased compliance
Greater rise in pressure for given volume in
Inflow > outflow
increased blood volume
Outflow > inflow
Decreased blood volume
mean arterial pressure equasion
MAP = CO x TPR MAP = diastolic pressure + (pressure sys - Pdia)/3
Pulse pressure
Systolic - diastolic
Determinate of systolic pressure
ventricular stroke volume
rate of ejection
compliance of aorta
Determinate of diastolic pressue
TPR and heart rate