Module 2.2 - Biofluid Transport II (Inertial effects)

Question 1

T/F: Fluids possess inertia

Answer 1

T

Question 2

Inertia

Answer 2

A property of matter by which it continues in its existing state of rest or uniform motion in a straight line, unless that state is changed by an external force.

Question 3

In the presence of friction, pressure difference in a vessel of length ‘l’ is modelled as

Answer 3

Del_P = Q_vR + IdQ_v/dt

Q_v*R term is specific to friction

Question 4

T/F: Blood flow in small and large vessels is periodic

Answer 4

F: only periodic in large vessels

Question 5

Avg [pulsatile] flowrate

Answer 5

Del_P/R

Question 6

T/F: Size of vessels matters in terms of inertial impact

Answer 6

T

Question 7

We consider the transient response of pulsatile flow in an ________, but not in an ________

Answer 7

Artery

Arteriole (smaller vessel)

Question 8

T/F: Angular velocity (omega) term must be in radians

Answer 8

T

Question 9

Large pulsatile outflow in phase and non-damped for _____ blood vessels

Answer 9

Larger

Question 10

If no inertial effects, blood flow…

Answer 10

Will be perfectly periodic, with no damping

Question 11

What should we consider when calculating periodic flow in a vessel?

Answer 11

Compliance

Question 12

Source of external pressure on blood flow/vessel walls

Answer 12

ECM and surrounding tissues

Question 13

T/F: As vessel compliance increases, periodic flow becomes more damped

Answer 13

F: as compliance increases, curve shifts further right (larger phase lag relative to input pressure)