Flow, Pressure, and Resistance

Question 1

Blood flow is directly () to blood pressure gradient( two ends of a vessel)
If the gradient increases, blood flow speeds up

Answer 1

proportional

Question 2

Blood flow is () proportional to peripheral resistance
If resistance increases, blood flow ()
-() is more important in influencing local blood flow because it is easily changed by altering blood vessel diameter

Answer 2

inversely
decreases
Resistance

Question 3

Systemic Blood Pressure :
-Systemic pressure is highest in () and declines throughout pathway
-Lowest in () system
-This promotes the eventual return of all blood to the heart via a high-to-low pressure gradient
-Arterial BP determined by: (2)

Answer 3

aorta
venous
Elasticity of vessels
Volume of blood

Question 4

Arterial Blood Pressure:
- () pressure: pressure exerted in aorta during ventricular contraction
Left ventricle pumps blood into aorta, stretching aorta
Averages 120 mm Hg in normal adult

() pressure: lowest level of aortic pressure when heart is at rest

() pressure: difference between systolic and diastolic pressure

(): throbbing of arteries due to difference in pulse pressures, which can be felt under skin

Answer 4

Systolic
Diastolic
Pulse
Pulse