venous: disease

What is venous compliance?

• Ability to handle large changes in volume without greatly affecting the pressure.

• Ability to contract and relax quickly.

• Ability to transport oxygen efficiently.

• Ability to resist changes in pressure.

What does transmural pressure depend on?

• Volume

• Temperature

• Pressure Gradient

• Surface Tension

Which shape has less resistance and allows for emptying?

• Circular

• Elliptical

During inspiration, what happens to abdominal and thoracic pressure?

• Inc abdominal pressure / Dec thoracic pressure

• Dec abdominal pressure / Inc thoracic pressure

What happens to venous flow after the release of Valsalva?

• Venous flow should augment.

• Venous flow should decrease.

• Venous flow remains unchanged.

• Venous flow reverses.

What is the hydrostatic pressure at the ankle when standing?

• 100mmHg

• 80mmHg

• 120mmHg

• 60mmHg

Which of the following is a characteristic of an effective calf pump?

• Incompetent valves

• Increased venous pooling

• Decreases venous pressure

• Venous hypertension

What is venous hypertension?

• Any abnormal increase in venous pressure due to high venous volume.

• A condition where arterial pressure is abnormally low.

• A disease characterized by high blood sugar levels.

• A disorder involving the immune system attacking healthy cells.

The role of the calf muscle pump in venous return is to:

• assist in the upward flow of blood towards the heart

• regulate the blood pressure in the veins

• store oxygenated blood for muscle use

• control the heart rate during exercise