Water and materials from the blood tend to move out of the capillary (and into the tissues) at the arterial end, and back into the capillary at the venous end.

Question

Quizplus · Accepted Answer

This occurs due to the balance of hydrostatic and osmotic pressures along the capillary length, with higher hydrostatic pressure at the arterial end pushing fluids out, and higher osmotic pressure at the venous end pulling fluids back in.

Water and Materials from the Blood Tend to Move Out