The first step in the formation of urine by the kidneys is the process of:
A)filtration
B)osmosis
C)facilitated diffusion
D)diffusion

Question

Quizplus · Accepted Answer

The first step in urine formation is filtration, which involves the movement of fluid and solutes from the blood in the glomerulus of the nephron into the Bowman's capsule. Osmosis, facilitated diffusion, and diffusion also play important roles in urine formation, but they occur after filtration.

The First Step in the Formation of Urine by the Kidneys