Venous Hemodynamics

Question 1

Name the five mechanisms for venous return.

Answer 1

1. Muscle pump
2. Valves
3. Respiratory pump
4. Cardiac suction
5. Vasomotor tone

Question 2

Which of the mechanisms is also called the peripheral heart?

Answer 2

Muscle pump

Question 3

Pressure decreases in the thoracic cavity, and increases in the abdominal cavity due to diaphragm pulling down during what stage of respiration?

Answer 3

Inspiration

Question 4

Inspiration results in ____ return from brachiocephalic veins, and ____ return from LEs.

Answer 4

More return from brachiocephalic veins, and Less return from LEs.

Question 5

Pressure increases in the thoracic cavity, and decreases in the abdominal cavity due to diaphragm relaxing back up during what stage of respiration?

Answer 5

Expiration

Question 6

Expiration results in ____ return from brachiocephalic veins, and ____ return from LEs.

Answer 6

Less return from brachiocephalic veins, and More return from LEs.

Question 7

This mechanism helps prevent backflow and creates pressure gradients.

Answer 7

Venous valves