Haemodynamics + Microcirculation

Question 1

In terms of regulation of arterial pressure, what is Darcy’s Law?

Answer 1

• blood flow is proportional to the pressure difference
• pressure gradient drives blood flow

Question 2

What type of blood vessel does laminar flow occur in?

Answer 2

Arteries/veins

Question 3

What type of blood vessel does turbulent flow occur in?

Answer 3

Ventricles

Question 4

What type of blood vessels does single-file flow occur in?

Answer 4

Capillaries

Question 5

What does the ‘total peripheral resistance’ refer to?

Answer 5

• resistance to blood flow
• blood flow is dependant on the vessel radius

Question 6

What’s Myogenic control?

Answer 6

The ability to maintain a constant blood flow

Question 7

What are starling forces in the trans-capillary solute exchange?

Answer 7

• net movement of fluid out of caps at arterial end -net movement of fluid into caps at the venule end

Question 8

What’s the drug nitric oxide (NO) used for?

Answer 8

Relaxation factor