ANATOMY
LYMPHATIC SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What causes lymph to flow through the lymphatic vessels?
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contraction of cardiac muscle
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contraction of smooth muscle
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contraction of skeletal muscle
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all of the above
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Explanation:
Detailed explanation-1: -There is no pump in the lymphatic system like the heart in the cardiovascular system. The pressure gradients to move lymph through the vessels come from the skeletal muscle action, respiratory movement, and contraction of smooth muscle in vessel walls.
Detailed explanation-2: -As fluid pressure increases between the cells, the cells move apart, pulling on the microfilaments that connect the endothelial cells of the lymph capillaries to tissue cells. The pull on the microfilaments causes the lymph capillaries to open like flaps, allowing tissue fluid to enter the lymph capillaries.
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