Question

average functional pressure in the vascular bed? this prevents leakage of plasma out of the pores of the capillaries even though nutrients can pass easily

Answer 1

The net filtration pressure (NFP) represents the average functional pressure in the vascular bed.

It is influenced by the interaction between hydrostatic and osmotic pressures and drives fluid movement between capillaries and surrounding tissues.

Step-by-step explanation:

The average functional pressure in the vascular bed is referred to as the net filtration pressure (NFP).

It represents the interaction between hydrostatic and osmotic pressures, which are responsible for driving fluid movement between the capillaries and surrounding tissues.

At the arterial end of the capillary, the high capillary hydrostatic pressure (CHP) pushes fluid out of the capillary, while the blood colloid osmotic pressure (BCOP) remains fairly constant.

As the blood moves through the capillary, the CHP decreases, resulting in a lower NFP. At the venous end, the CHP drops even further, causing fluid reabsorption back into the capillary.

This average functional pressure prevents leakage of plasma out of the capillaries, ensuring that nutrients pass through easily while maintaining a balance between filtration and reabsorption.