Question

The glomerular afferent arteriole has a pressure of

• A. +120 mm Hg
• B. -120 mm Hg
• C. +95 mm Hg
• D. +75 mm Hg

Answer 1

The correct option is D +75 mm Hg

Glomerular pressure is about 75 millimeters of mercury (10 kPa). It is opposed by osmotic pressure (30 mmHg, 4.0 kPa) and hydrostatic pressure (20 mmHg, 2.7 kPa) of solutes present in capsular space. This difference in pressure is called effective pressure (25 mmHg, 3.3 kPa).

So, the correct answer is '+75 mm Hg'.