Hematodynamics

Question 1

What is Poiuseulle Law? Importance?

Answer 1

(8 x (visc)/ (3.14* r^4))
*Gives total resistance
As vessels dilate resistance is dropped. as they constrict resistance increases exponentially.

Question 2

Resistance Equation

Answer 2

Rt = R + R - Series
1/Rt = 1/Rt + 1/Rt - Parallel

Question 3

Flow -> Q?

Answer 3

The (mL/min) volume of liquid moved per time. Q = (p-p)/R

• also Q = V * A

Question 4

Velocity of Flow -> V?

V to high?

Answer 4

The (m/min) distance per time.
V = Q/A (cross sectional area)

turbulent flow – Murmurs

Question 5

What is the Reynold Equations Saying?

Answer 5

If flow is the same, and the diameter of a tube is increased, turbulence is more likely to happen.

Question 6

Laplace Law:

What is wall stress?

Answer 6

Pressure in wall - pulling apart.

T = P (distending *)(radius)/ wall thickness