Lesson 2C Part 3

Question 1

What happens in low flow states

Answer 1

Red cells stick together which increases viscosity

Question 2

Clotting mechanisms lead to

Answer 2

Entrapment of red blood cells and clot foramtion which raises pressure

Question 3

Temp and viscosity have what kind of relationship

Answer 3

Inverse

Question 4

Major regulator of vascular resistance is

Answer 4

Vessel radius

Question 5

Increased fatty tissue required more

Answer 5

Blood vessels to service us and adds to the toal vessel length in the body

Question 6

The longer the vessel length the _______ the resistance

Answer 6

Greater

Question 7

Vessel resistance is ____ proportional to the viscosity

Answer 7

Directly

Question 8

Vessel resistance is ______ to the radius to the fourth power

Answer 8

Inverse proportional

Question 9

Vessel resistance is ______ to the length of the vessel

Answer 9

Directly

Question 10

Peripheral resistance is controlled by what two things

Answer 10

Sympathetic nerve innervation

Autoregulation

Question 11

the arterioles are the ________ of the vascular tree

Answer 11

Stopcocks

Question 12

What is reactive hyperemia

Answer 12

Defined as the marked increase in blood flow which follows restoration of arterial inflow to a previously ischemic limb

Question 13

Driving pressure for flow is determined by

Answer 13

Potential energy and kinetic energy

Question 14

Energy loss is highest in region of

Answer 14

Stenosis due to consdierable friction from turbulent and vortex motion

Question 15

Inside the stenosis there is a _____ in kinetic energy

Answer 15

Increase and an increase in blood velocity

Question 16

According to bernouilis principle ther is corresponding

Answer 16

Fall in blood pressure after stenosis

Question 17

Venous complaince is _____ to arteries

Answer 17

30x larger

Question 18

Where is atheroma evident

Answer 18

Spectral doppler analysis

Question 19

Plug flow has

Answer 19

All the same velocities

Question 20

Parabolic flow (laminar) has

Answer 20

Highest flow in the center

Question 21

Laminar flow profile is determined by

Answer 21

Fractional and inertial forces between the layers of blood and changes through out the pulse cycle

Question 22

At low velocity, fluid flow is

Answer 22

Laminar

Question 23

Turbulent flow aka

Answer 23

Abnormal flow

Question 24

Turbulent flow occurs at ___ velocities

Answer 24

High

Question 25

What happens in terms of energy with turbulent flow

Answer 25

Irreversible loss of energy

Question 26

Disturbed flow is

Answer 26

Non random seperation of flow in vessel with obvious change in lumen size

Question 27

Is there an increase in flow velocity with disturbed flow

Answer 27

No just spectral broadening occurs

Question 28

Collateral flow arrises due to

Answer 28

Ischemia

Question 29

Anastomosis is

Answer 29

Branches connecting form adjacent blood vessels

Question 30

Where can collatera circulation occurs where

Answer 30

In both vein and arteries

Question 31

Where is the triphasic waveform usually found

Answer 31

In arteries supplying a high resistance peripheral vascular bed