APPLIED RADIOLOGICAL ANATOMY

Detailed explanation-1: -Skeletal Muscle Pump – Peripheral veins work in concert with the muscular contraction to increase venous return to the heart. When muscles (such as the quadriceps) contract (during walking, running etc), the valves are forced open to increase the venous return.

Detailed explanation-2: -The skeletal muscle pump has been shown to be very effective at emptying the venous vessels, as more than 40% of the intramuscular blood volume can be translocated centrally with a single muscular contraction (Stewart et al.

Detailed explanation-3: -The muscle pump theory holds that muscle contraction aids muscle perfusion by emptying the venous circulation, which lowers venous pressure during relaxation, increasing the pressure gradient across the muscle, thus facilitating an increased arterial inflow (4, 8, 19).