BLOOD CARDIOVASCULAR SYSTEM LYMPHOID ORGANS
LYMPH NODES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It exits arterioles at high pressure and uses diffusion to be absorbed into lymphatic capillaries
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It exits arterioles at high pressure and uses osmosis to be absorbed into lymphatic capillaries
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It exits arterioles at low pressure and uses diffusion to be absorbed into lymphatic capillaries
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It exits arterioles at low pressure and uses osmosis to be absorbed into lymphatic capillaries
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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: -The lymphatic capillaries bring lymph further into the lymphatic vessels. The capillaries have external valves but no internal valves or smooth muscle, so the pressure of lymph accumulation itself must propel the fluid forward into the larger vessels.
Detailed explanation-3: -Thus, the principal task of the lymphatic vascular system is transport. The body must impart energy to the lymph via pumping mechanisms to propel it along the lymphatic network and use pumps and valves to generate lymph flow and prevent its backflow.