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Questions and Answers
Which pressure is responsible for the force exerted by a fluid pressing against a wall?
Which pressure is responsible for the force exerted by a fluid pressing against a wall?
- Interstitial fluid pressure
- Osmotic pressure (OP)
- Hydrostatic pressure (HP) (correct)
- Filtration pressure
At which end of the capillary is the hydrostatic pressure (HP) greater?
At which end of the capillary is the hydrostatic pressure (HP) greater?
- HP is not present in capillaries
- Venous end
- Both ends have the same HP
- Arterial end (correct)
What is the osmotic pressure (OP) created by?
What is the osmotic pressure (OP) created by?
- Presence of hydrostatic pressure
- Presence of nutrients
- Presence of gases
- Presence of large, non-diffusible molecules (correct)
Why does fluid leave the capillary at the arterial end?
Why does fluid leave the capillary at the arterial end?
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Why is some fluid reclaimed by the capillary at the venous end?
Why is some fluid reclaimed by the capillary at the venous end?
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Study Notes
Pressure in Fluids
- Hydrostatic pressure is responsible for the force exerted by a fluid pressing against a wall.
Pressure in Capillaries
- Hydrostatic pressure (HP) is greater at the arterial end of the capillary.
- Osmotic pressure (OP) is created by the concentration of solutes.
Fluid Movement in Capillaries
- Fluid leaves the capillary at the arterial end due to higher hydrostatic pressure.
- Some fluid is reclaimed by the capillary at the venous end due to higher osmotic pressure.
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