Question

If the filtration pressure is +8 kPa, the colloid osmotic pressure is -2 kPa, and the capsular fluid hydrostatic pressure is -1 kPa, then the pressure in the glomerular capillaries is _______ kPa.

a. 2
b. 3
c. 5
d. 11

Answer 1

The pressure in the glomerular capillaries is 11 kPa.

Step-by-step explanation:

The pressure in the glomerular capillaries can be calculated using the net filtration pressure (NFP) formula, which is the difference between the glomerular blood hydrostatic pressure (GBHP) and the sum of the blood colloid osmotic pressure (BCOP) and the capsular hydrostatic pressure (CHP). In this case, the filtration pressure is +8 kPa, the colloid osmotic pressure is -2 kPa, and the capsular fluid hydrostatic pressure is -1 kPa. Therefore, the pressure in the glomerular capillaries is 8 kPa - (-2 kPa) - (-1 kPa) = 11 kPa. The correct answer is d) 11.