Principles of Blood Flow

Question 1

Distribution of flow

Answer 1

controlled by the adjustment of resistances located prior to the capillary beds
-precapillary sphincters and arterioles

Question 2

Flow of O2 to the tissues

Answer 2

CO X arterial O2 content

Question 3

Continuity equation

Answer 3

Q= A x v

-used to determine the flow of blood through the system

Question 4

Transmit time

Answer 4

t= l/v or t= V/Q
l=length in cm
v= velocity cm/sec
Q= flow cm3/sec
V= volume cm3

Question 5

Major physiological variables that determines the resistance to flow of blood

Answer 5

Radius
Viscosity
Temperature- inversely related to viscosity

Question 6

Length

Answer 6

plays a role in BP across the system

Longer the length– greater resistance– decrease in flow along the vessel