Question

Primary urine is formed in _________________ and secretion.

a. the loop of Henle by active transport
b. Bowman s capsule by ultrafiltration
c. the collecting duct by diffusion
d. the nephron by countercurrent exchange

Answer 1

Primary urine is formed in Bowman's capsule by ultrafiltration.

Step-by-step explanation:

The primary urine is formed in Bowman's capsule by ultrafiltration. Bowman's capsule, which surrounds the glomerulus, filters blood based on particle size to produce a filtrate that lacks cells and large proteins. This filtrate, known as primary urine, is then modified through secretion and reabsorption as it moves through the nephron tubules.