Question

Plasma continually leaks from the capillaries into interstitial fluid. In spite of this loss, blood plasma levels are maintained by the

a. return of fluid by the lymph vessels to the bloodstream.
b. regular intake of liquids to replace lost fluids.
c. drawing back of plasma into lymphatic vessels by the pumping action of the heart.
d. active transport of water against the concentration gradient.

Answer 1

a. return of fluid by the lymph vessels to the bloodstream is the answer