Question

multiple choice question
which term describes the physical force exerted by a liquid against a surface such as a capillary wall?

orthostatic pressure

hydrostatic pressure

hypostatic pressure

oncotic pressure

Explanation:

To solve this, we analyze each option:

• Orthostatic pressure relates to blood pressure changes with posture, not liquid - surface force.
• Hydrostatic pressure is the pressure exerted by a fluid (liquid) at equilibrium due to gravity, and it acts against surfaces like capillary walls.
• Hypostatic pressure is not a standard term for liquid - surface force in this context.
• Oncotic pressure is related to osmotic pressure from colloidal particles, not liquid - surface force.

Answer:

B. Hydrostatic pressure