Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • NCERT
  • Describe the structure and functioning of nephrons.

Q. 1.     Describe the structure and functioning of nephrons.

Answers (2)

best_answer

The nephrons are the basic filtering unit of our excretion system. 

Each nephron has a Bowman's capsule which is a cup shaped bag having a bundle of vessels called glomerulus. Impure blood from all parts of our body enters the glomerulus through the renal artery and the impurities are filtered, The rest of the nephron is coiled and there sugars, amino acids, excess water etc. which are important for the body are re absorbed. The filtrate left is urine containing all the waste generated in body e.g. urea. This urine is excreted through the urethra.

Nephron

Structure\ of\ a\ nephron

 

Posted by

Sayak

View full answer

The nephron has a cup-shaped bag at its upper end which is called Bowan's capsule.The lower end of Bowan's capsule is tube-shaped and it is called a tuble.The Bowan's capsule and the tubule taken together make a nephron. One end of the tubule is connected toBowan's capsule and its other end is connected to a urine-collecting duct of the kidney. The Bowan's capsule contain a bundle of capillaries which is called glomerulus. One end of glomerules is attracted to renal artery which bring the dirty blood containing the urea waste in it. The other end of glomerulus comes out of Bowan's capsule as a blood capillary, surround the tubule of nephron and finally joins a renal vein. The fiction of glomerulus is to filter the blood passing through it. The dirty blood containing waste like urea enters the glomerulus. The glomerulus filters this blood. During filtration, the substance like glucose, amino acid, salts, water and urea, etc., present in the blood pass into Bowan's capsule and then enter the tubule of nrphron. When the filtrate containing useful substance as well as the waste substance passes through the tubule, then the useful substances like all glucose, all amino acid, most salts, most water etc., are reabsorbed into the blood through blood capillaries surrounding the tuble. Only the waste substance urea, some unwanted salts and excess water remain behind in the tubule. The liquid left behind in the tubule of nephron is urine. The nephron carries this urine into the collecting duct of the kidney from where it is carried to ureters. From the ureters, urine passes into urinary bladder. Urine is stored in the bladder for some time and ultimately passed out of the body through urethra.

Posted by

Deepika

View full answer

Similar Questions

Trending Articles/News

anam-khan

CBSE Class 10 board exams from February 15 to March 18; download date sheet 2025 PDF
anam-khan

CBSE Date Sheet 2025 Live: CBSE Class 10, 12 board exam timetable soon at cbse.gov.in; practical dates
anam-khan

CBSE Date Sheet 2025 Live: CBSE to announce Class 10, 12 board exam dates soon at cbse.gov.in; sample paper

Latest Question