Venous Return Flashcards
Definition of venous return
The return of blood to the the heart via the vena cava
what does the skeletal muscle pump do
When the muscles contract/relax they change shapelwhich presses on the nearby veins and causes a pumping action, squeezing the blood back towards the heart
what does the respiratory pump do
When the chest cavity
contracts/relaxes during inhalation and exhalation it cayuses pressure on the nearby veins and assists blood return
What does the heart suction pump
As the heart carries out its systole and diastole phase it pumps the blood quicker to the heart
What do pocket valves do
Prevents backflow to ensure that blood goes in one direction
How does gravity aid venous return
Helps the blood return to the heart from the body
How does smooth muscles aid in venous return
A very thin smooth muscle in the walls of the veins. This helps squeeze blood back towards the heart
