Multiple choice

Kidney is made up of a large number of excretory units called

  1. nephrons

  2. bladders

  3. urethra

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Nephrons are the microscopic functional units of the kidney, each consisting of a glomerulus and tubule system that filters blood and produces urine. A human kidney contains approximately 1 million nephrons. Bladders store urine, while urethra is the exit tube.

Keep practicing — related questions