control of BP- role of vasculature Flashcards
1
Q
what does a larger SV mean
A
larger pulse pressure at any compliance
2
Q
explain compliance
A
low compliance means greater workload, thus, an inverse relationship
3
Q
what is diastolic blood pressure and the 2 factors affecting it
A
Arteriolar resistance
-total peripheral resistance (TPR)
-Modified by disease and physiology- atherosclerosis
Heart rate
-cardiac cycles per unit (beat per minute; BPM)
-increased HR means increased DBP
4
Q
what is chronotropy
A
influence on heart rate (increases heart rate)
5
Q
what is dromotropy
A
affects the conductivity of cardiac muscles
6
Q
what is inotropy
A
the force of contraction
7
Q
what is lusitropy
A
the rate of myocardial relaxation
