Venus return

Question 1

Functional adaptations that influence venus return?

Answer 1

1. movement of skeletal muscles.
2. One way valves in the major veins.
3. respiratory pump.

Question 2

How to skeletal muscles influence venus return?

Answer 2

contraction of mussels compresses veins and increases the BP. This allows for the valves in the veins to open and blood to flow past, against gravity.

Question 3

How do one way valves in veins influence venus return?

Answer 3

Once the blood passes the valve the weight of the blood will close the valve stopping back flow and encouraging flow towards the hear.

Question 4

How does the respiratory pump work and effect venus return?

Answer 4

While breathing normally the use of muscles creates a tidal pressure which allows the intrathoratic vein to contact and expand. Which helps blood flow.
The movement of the diaphragm from breathing will create abdominal venus pressure.