Question

The basic filtration unit of the kidney is-

• A. Ureter
• B. Glomerulus
• C. Urethra
• D. Collecting tubule

Answer 1

The correct option is B

Glomerulus

The correct option is B:

Explanation of correct option:

Nephron:

1. Nephrons are excretory or functional units of the kidney.
2. The cup-shaped structure present in the upper part of the nephron is called the Bowman capsule.
3. In the Bowman capsule, there is a group of blood capillaries called the glomerulus.
4. The glomerular capillaries receive blood through an afferent renal artery under high pressure and leave through an efferent renal artery.
5. The blood filtering in the walls of the glomerulus and Bowman's capsule is thin and permeable.

Explanation of incorrect option: -

Option (A):

Ureter:

1. The ureters are a pair of long, narrow, thin-walled, and tubular structures which start from the kidney, run down, and open in the urinary bladder.

Option (C):

Urethra:

1. The urethra is a muscular and tubular structure that extends from the urinary bladder to the outside.
2. The urethra carries the urine to the outside.

Option (D):

Collecting tubule:

1. The Collecting duct is a long, straight tube where the maximum reabsorption of water takes place to produce concentrated urine.

Final answer: The basic filtration unit of the kidney is Glomerulus.