Which of the choices below reflects the balance (or imbalance) between the direction and amount of fluid that flows across the capillary walls?

Question

Quizplus · Accepted Answer

The balance (or imbalance) between the direction and amount of fluid that flows across the capillary walls is mainly determined by the opposing forces of hydrostatic pressure and osmotic pressure. Hydrostatic pressure, which is generated by the pumping action of the heart, tends to push fluids out of the capillaries and into the surrounding tissue. Osmotic pressure, on the other hand, is caused by the concentration of solutes (mostly proteins) in the blood, which draws fluids back into the capillaries. The interplay between these two forces determines the direction and amount of fluid exchange across the capillary walls. Blood volume, viscosity, plasma, and formed element concentration may also affect fluid exchange, but to a lesser degree than hydrostatic and osmotic pressure.

Which of the Choices Below Reflects the Balance (Or Imbalance)