Given that we have the following blood pressures at the arterial end of a capil- lary: Blood pressure: 28 mmHg, and Osmotic pressure: 20 mmHg; what is the net filtration pressure at this end? A. 0.71 mmHg B. 1.4 mmHg C. 8 mmHg D. 48 mmHg
Option C. BP promotes the outflow of liquid and solutes from the arterial end, at the same time as the blood’s osmotic pressure promotes the influx of water. That is, those impacts are opposing. Hence 28–20 = 8 mmHg.
