If CHP is greater than BCOP, which statement is true regarding capillary fluid movement?

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Multiple Choice

If CHP is greater than BCOP, which statement is true regarding capillary fluid movement?

Capillary fluid movement is governed by Starling forces: the hydrostatic pressure inside the capillary (which tends to push fluid out) and the blood’s colloid osmotic pressure (which tends to pull fluid in). When the capillary hydrostatic pressure is greater than the colloid osmotic pressure, the outward push dominates, so fluid exits the capillary into the surrounding interstitial space. That’s why, in this scenario, fluid leaves the capillary. If the pressures balance, there’s no net movement, and if the colloid osmotic pressure exceeds the capillary hydrostatic pressure, fluid would be drawn back into the capillary. The idea that the oncotic pressure drives filtration when hydrostatic pressure is high is incorrect because the oncotic pressure acts to pull fluid in, opposing filtration.

Capillary fluid movement is governed by Starling forces: the hydrostatic pressure inside the capillary (which tends to push fluid out) and the blood’s colloid osmotic pressure (which tends to pull fluid in). When the capillary hydrostatic pressure is greater than the colloid osmotic pressure, the outward push dominates, so fluid exits the capillary into the surrounding interstitial space. That’s why, in this scenario, fluid leaves the capillary. If the pressures balance, there’s no net movement, and if the colloid osmotic pressure exceeds the capillary hydrostatic pressure, fluid would be drawn back into the capillary. The idea that the oncotic pressure drives filtration when hydrostatic pressure is high is incorrect because the oncotic pressure acts to pull fluid in, opposing filtration.

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