The movement of water and electrolytes between fluid compartments is regulated primarily by
A) diffusion and osmosis.
B) hydrostatic pressure and osmotic pressure.
C) pinocytosis and phagocytosis.
D) active and passive transport.
E) diet and weather.

Question

Quizplus · Accepted Answer

The movement of water and electrolytes between fluid compartments is regulated primarily by hydrostatic pressure (the pressure exerted by fluid) and osmotic pressure (the pressure exerted by solutes). This includes movement between intracellular and extracellular compartments, as well as movement between different extracellular fluid compartments (such as blood plasma and interstitial fluid). Diffusion and osmosis, active and passive transport, and phagocytosis and pinocytosis can all play a role in this regulation, but they are not the primary mechanisms. Diet and weather may affect fluid and electrolyte balance, but they are not direct regulators of fluid movement between compartments.

The Movement of Water and Electrolytes Between Fluid Compartments Is