BLOOD CARDIOVASCULAR SYSTEM LYMPHOID ORGANS
LYMPHATIC SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Lymphatic capillaries are loosely joined endothelial minivalves.
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True
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False
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Either A or B
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None of the above
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Explanation:
Detailed explanation-1: -The endothelial cells forming the walls of lymphatic capillaries are not tightly joined. The edges of adjacent cells overlap each other loosely, forming easily opened, flaplike MINIVALVES.
Detailed explanation-2: -Lymphatic Vessels The wall of the lymph capillary is composed of endothelium in which the simple squamous cells overlap to form a simple one-way valve. This arrangement permits fluid to enter the capillary but prevents lymph from leaving the vessel.
Detailed explanation-3: -The answer is (C): the cells of lymphatic capillaries are tightly joined. Lymphatic vessels belong to a one-way system, in which lymph collected from the tissues flows only toward the blood circulation.
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