Question

multiple choice question
which statement accurately describes the development of pressure (which affects water movement) in a capillary network?
there is a net inward pressure at the venule end.
there is no pressure - difference at the arteriolar end (inward and outward pressures are balanced)
the is a net inward pressure at the arteriolar end.
there is a net outward pressure at the venule end.

Explanation:

In a capillary network, at the arteriolar end, there is a net outward pressure due to hydrostatic pressure being higher than colloid - osmotic pressure, which pushes fluid out of the capillaries. At the venular end, colloid - osmotic pressure is higher than hydrostatic pressure, resulting in a net inward pressure that causes fluid to be reabsorbed into the capillaries.

Answer:

There is a net inward pressure at the venule end.