Question

__________ is the functional unit of the human kidney.

• A. Neuron
• B. Nephron
• C. Alveoli
• D. glomerulus

Answer 1

The correct option is B Nephron

The function of kidneys is to filter wastes from the blood and excrete it out of the body in the form of urine. This function of filtering and formation of urine is performed by the nephrons present within the kidney. Thus the functional unit of kidneys is nephron. Each nephron has two parts – the glomerulus and the renal tubule. Glomerulus is a tuft of capillaries.

Neuron is the functional unit of the brain. It helps in the transmission of impulses.
Alveoli is the functional unit of the lung and they form the site of gaseous exchange.