Why are the lymphatic vessels closely associated with the capillary beds?

Capillaries release some fluid into the spaces between cells, where it becomes interstitial fluid. Most of this fluid returns directly to the blood capillaries, but some is collected by nearby lymphatic vessels and eventually returned to the bloodstream. Therefore, the correct choice is “Some of the interstitial fluid that leaks from the capillaries is picked up by the lymphatic vessels.”

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