MICROANATOMY

Detailed explanation-1: -Skeletal muscles also play a key role in the movement of blood around the body. Veins embedded within a muscle are compressed during contraction of that muscle, causing an increase in blood pressure due to the presence of one-way valves within the veins. This increase in pressure drives the blood towards the heart.

Detailed explanation-2: -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-3: -During dynamic exercise, the rhythmic contraction of the peripheral skeletal muscles results in the compression of the intramuscular veins, and imparts a considerable amount of kinetic energy to the venous blood and facilitates its return to the heart.

Detailed explanation-4: -A thin layer of smooth muscle in the veins helps squeeze blood back towards the heart. When muscles contract and relax during the inspiration and expiration process, pressure changes occur in the thoracic and abdominal cavities. These pressure changes compress the nearby veins and assist blood return to the heart.

Detailed explanation-5: -The skeletal muscle pump or musculovenous pump is a collection of skeletal muscles that aid the heart in the circulation of blood. It is especially important in increasing venous return to the heart, but may also play a role in arterial blood flow.