Question

Explain briefly: lymphatic vessels are provided with valves

Answer 1

Explanation:

Lymphatic Valves

Lymphatic ValvesValves are found in larger lymph vessels and collecting vessels and are absent in the lymphatic capillaries. The valves is to prevent backflow of fluid, so that lymph eventually flows forward instead of falling backwards.

Lymphatic ValvesValves are found in larger lymph vessels and collecting vessels and are absent in the lymphatic capillaries. The valves is to prevent backflow of fluid, so that lymph eventually flows forward instead of falling backwards.Most of the lymphatic vessels have valves like those in veins to keep the lymph, which can clot, flowing in the one direction (toward the heart). Lymphatic vessels drain fluid called lymph from tissues throughout the body and return the fluid .

Lymphangion is the functional unit of collecting lymphatic vessels. Image of a cannulated collecting lymphatic vessel containing two intraluminal valves, the first one is closed and the lymph is transported through the second open valve to the next lymphangion.

Answer 2

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Lymphatic vessels are thin-walled, endothelial-lined channels that originate near the capillary beds and serve as a drainage system for returning interstitial tissue fluid and inflammatory cells to the blood. Both lymphatic vessels and veins have valves to prevent backflow of fluid.

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