What is the function of overlapping endothelial cells in lymphatic capillaries?
A) Overlapping endothelial cells strengthen the walls of the lymphatic capillaries so they are not distorted in tissues.
B) Overlapping endothelial cells act as one-way valves that permit the entry of fluids and solutes but prevent their return to the intercellular spaces.
C) Overlapping endothelial cells act as one-way valves that permit the exit of fluids and solutes but prevent their entry into the capillary.
D) Overlapping endothelial cells allow large proteins to enter the lymphatic capillaries to be transported to the venous system.
E) Overlapping endothelial cells produce tight junctions that prevent the movement of lymph into or out of the capillary.
Answer: B
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