Question

Describe the mechanisms by which fluid moves between the vascular and interstitial spaces in a capillary.

physiology

Answer 1

Fluid moves between the vascular and interstitial spaces in a capillary by osmosis. Osmosis is the movement of the fluid from the lower concentration solution to higher concentration solution through the semipermeable membrane. In high concentration solution, solutes present in more quantity in less amount of water resulting in high hydrostatic pressure. In low concentration solution, solutes are present in less quantity in more amount of water resulting in low hydrostatic pressure. This hydrostatic pressure drives the movement of water from high hydrostatic pressure solution to low hydrostatic pressure solution.

In this case, the 2 solutions are vascular tissues and interstitial space.