Question

The function of the glomerulus in the mammalian kidney is
A. Reabsorption of salts from the blood.
B. Urine formation through blood filtration
C. Urine Collection
D. All of the above

Answer 1

Hint: A cup-like sac which is found at the starting of a nephron's tubular component in the mammalian kidney is referred to as glomerulus. The very first step for the urine formation is performed by the glomerulus of the nephron (functional unit of the kidney).

Complete answer:
Bowman's capsule which we also named as a glomerular capsule or capsula glomeruli is a part of nephron which surrounds the glomerulus.
The glomerulus is found within a sac (Bowman's capsule) comprising a cluster of capillaries and is responsible for the first step of formation of urine i.e. blood filtration for the formation of urine. In the nephron, a collection of capillaries called glomeruli filters the blood and makes a filtrate. Fluids from the blood which is present in the glomerulus are received as a glomerular filtrate in the Bowman's capsule. This filtrate is processed further along the other parts of the nephron to form urine.
A sac-like structure that holds as well as collects the urine which comes out from the ureters is known as the urinary bladder.

Therefore, the correct option is (B) Urine formation through blood filtration.

Note:
 After the glomerular filtration, the other two-step which the kidney undergoes to collect and get rid of waste from the body include:
> Tubular reabsorption: The filtered blood is reabsorbed by the tubules present in the nephrons in nearby blood vessels.
> Tubular secretion: The filtrate is then passed to the collecting ducts through the tubules. Eventually, the urine is formed which is then taken to the bladder where it remains for some time.