chapter 2

Question 1

cardiac output

Answer 1

amount of blood that enters the arterial system

Question 2

relationship between resistance and diameter

Answer 2

diameter has the most dramatic affect on resistance

Question 3

Poiseuille’s Law

Answer 3

relationship between pressure, volume flow, and resistance

Question 4

Bernoulli

Answer 4

Law of conservation of energy; velocity and pressure are inversely related

Question 5

pressure gradients

Answer 5

difference in pressure between two points in a vessel

Question 6

low resistance flow

Answer 6

flow of continuous, steady nature

Question 7

high resistance flow

Answer 7

pulsatile flow

Question 8

effects of stenosis on flow

Answer 8

flow is reduced along with pressure

Question 9

hemodynamically significant stenosis

Answer 9

usually becomes significant when cross sectional area of lumen is reduced 75%

Question 10

critical arterial stenosis

Answer 10

both pressure and volume flow is decreased

Question 11

stenosis profile

Answer 11

1. velocities are dampened prox to stenosis
2. increase in doppler shift
3. poststenotic turbulence

Question 12

poststenotic turbulence

Answer 12

appears to have forward and reversed flow in areas of stenosis

Question 13

relationship of diameter and velocity

Answer 13

decreased diameter = increased velocity