Question

Structural and functional unit of kidney is
A) Neuron
B) Nephron
C) Lungs
D) Schwann cells

Answer 1

Hint: A pair of bean shaped organs behind your belly and on either side of the spine is kidney.Each kidney is 4 to 5 inches long,roughly the size of a fist.

Complete answer:
Neurons are the functional cells in the nervous system which transmits information from one to other nerve cells,muscles and glands.So this can’t be the correct answer.Lungs is the respiratory organ.This can't be the correct option again.Schwann cells helps in the maintenance of peripheral nervous systems. Nephrons are the structural and functional unit of the kidney.Each human kidney has 1,000,000 nephrons.Nephron helps kidney to filter impurities from the blood from ultrafiltration.This process occurs when the blood pressure forces water and other small molecules through tiny gaps in the capillary walls.This substance without blood cells and large molecule in blood stream is ultrafiltrate.This travels through various loops of nephrons where the impurities are removed and collected in the bladder.

The correct answer is option(b)Nephron.

Note:The job of the kidney is to filter the blood and remove the impurities, control the blood fluid balance and keep the electrolyte levels right.The blood in our body passes through kidney several times in a day.THe kidney filters the blood and it is checked for the level of salt,water and minerals.After checked they are sent to different parts of the body and the waste is collected in the bladder called ureter.When the content of urea in urine is more than a specified amount it leads to different kidney ailments.This includes improper functioning of kidney,kidney failure and finally treated through kidney transplantation.