Venous return Flashcards
1
Q
Pocket valves are what
A
one way valves which prevent backflow of blood in the veins
2
Q
Muscular pump is what
A
Contraction of SKELETAL muscle during exercise, compressing the veins forcing blood back toward the heart
3
Q
Respiratory pump is what
A
During inspiration and expiration a pressure differen between the thoracic and abdominal cavities is created which squeezes blood back towards the heart
4
Q
Smooth muscle does what
A
Smooth muscle in the walls of the veins venoconstricts to create VENOMOTOR TONE maintaining pressure in the vein and this helping the transport of blood back to the heart.
5
Q
Gravity does what for venous return
A
Blood from ABOVE the heart returns towards the heart with help of GRAVITY
