HISTOLOGY
BLOOD VESSELS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Valves
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Valves and muscles contracting around veins (skeletal muscle pump)
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Muscles contracting around veins (skeletal muscle pump)
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Thick muscular walls to push blood up
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Detailed explanation-1: -Venous stasis occurs as the skeletal muscle pump becomes less efficient, and blood flow within the veins in the lower limbs can become slow-moving or stop completely, leading to pooling and venous stasis. Muscle disuse can contribute to thrombus formation in the intramuscular veins.
Detailed explanation-2: -Structure of a vein, which consists of three main layers; an outer layer of connective tissue, a middle layer of smooth muscle, and an inner layer lined with endothelium. There are three sizes of veins, large, medium, and small.
Detailed explanation-3: -Venous return to the right heart maintains filling pressure, permitting adaptation to changing cardiac output requirements. A prerequisite for such regulation is that the vascular bed with appropriate tone should be adequately filled with blood.