Arterial Physiology & Fluid Dynamics

Question 1

the arterial system pumps about ___ml of blood into the aorta with every heart beat

Answer 1

70ml

Question 2

what is stroke volume?

Answer 2

amount of blood ejected during heart beat

Question 3

blood moves from regions of ___ to ___ energy

Answer 3

high to low energy

Question 4

energies associated with blood (3)

Answer 4

kinetic
pressure
gravitational

Question 5

kinetic energy formula

Answer 5

Question 6

pressure/potential energy formula

Answer 6

Question 7

what happens during inspiration? (3)

Answer 7

diaphragm moves down towards abdomen
↑ abdominal pressure ↓ thoracic pressure
↑ blood flow to heart ↓ blood flow to legs

Question 8

what happens during expiration? (3)

Answer 8

diaphragm moves upward into thorax
↓ abdominal pressure ↑ thoracic pressure
↓ blood flow to heart ↑ blood flow to legs

Question 9

___ flow is affected by cardiac contraction

Answer 9

pulsatile flow

Question 10

___ flow is affected by respiration

Answer 10

phasic

Question 11

2 types of laminar flow

Answer 11

plug
parabolic

Question 12

___ flow = blood travels at the same velocity

Answer 12

plug

Question 13

___ flow = highest velocity is in the center of the vessel

Answer 13

parabolic flow

Question 14

____ indicates whether flow is laminar or turbulent

Answer 14

Reynolds Number

Question 15

Re < 1500

Answer 15

laminar flow

Question 16

Re > 2000

Answer 16

turbulent flow

Question 17

↑viscosity ↓____

Answer 17

↑viscosity ↓velocity

Question 18

Poiseuille’s Law equation

Answer 18

Question 19

↑ diameter ↓ ____ & ____

Answer 19

↑ diameter ↓ resistance & velocity

Question 20

Bernoulli’s Principal

Answer 20

velocity and pressure are inversely related

Question 21

Ohm’s Law

Answer 21

movement of fluid through a tube and movement of electricity through a wire are similar

pressure gradient = flow x resistance
voltage = current x resistance

Question 22

____ Doppler waveform is usually seen proximal to stenosis

Answer 22

monophasic Doppler waveform

Question 23

left ventricular and/or aortic valve abnormalities alter ____

Answer 23

arterial hemodynamics

Question 24

unilateral flow alterations suggest (2)

Answer 24

vessel disease
extrinsic compression

Question 25

bilateral flow alterations suggest

Answer 25

cardiac involvement