(Q.78) Describe the structure and
functioning of nephron in the human body.
(Ans)
Nephrons are the filtration units of kidney. Each kidney has a large no. of
nephrons. The process starts with filteration of urine.
Cup-shaped
structure associated with capillaries is called Bowmans capsule. This collects
filtered urine. As this urine flows through the tubular part of nephron,
reabsorption of glucose, amino acids, salts and water take place. The amount of
water and other substances reabsorbed depends upon how in excess they are
present in the body.The urine formed enters into a long tube called ureter
through the collecting ducts of kidney. Then urine is collected in urinary
bladder.
