Which of the following forces opposes glomerular filtration?

• A. Glomerular hydrostatic pressure
• B. Net filtration pressure
• C. Capsular hydrostatic pressure
• D. Blood colloid osmotic pressure

Answer: (D)

Verified step by step guidance

1. Understand the concept of glomerular filtration: Glomerular filtration is the process by which the kidneys filter blood, removing excess wastes and fluids. It occurs in the glomerulus, a network of capillaries located at the beginning of a nephron.
2. Identify the forces involved in glomerular filtration: There are several forces that affect glomerular filtration, including glomerular hydrostatic pressure, capsular hydrostatic pressure, and blood colloid osmotic pressure.
3. Define glomerular hydrostatic pressure: This is the pressure exerted by the blood within the glomerular capillaries, pushing water and solutes out of the blood and into the glomerular capsule.
4. Define capsular hydrostatic pressure: This is the pressure exerted by the fluid in the glomerular capsule, which opposes the movement of water and solutes from the blood into the capsule.
5. Define blood colloid osmotic pressure: This is the pressure exerted by proteins in the blood plasma, which draws water back into the capillaries from the glomerular capsule, opposing filtration.