describe the functioning of nephrons
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Answer:
Explanation:a. The blood enters the kidney through the renal artery, which branches into many capillaries associated with glomerulus.
b. The water and solute are transferred to the nephron at Bowman’s capsule.
c. In the proximal tubule, some substances such as amino acids, glucose, and salts are selectively reabsorbed and unwanted molecules are added in the urine.
d. The filtrate then moves down into the loop of Henle, where more water is absorbed.
e. From here, the filtrate moves upwards into the distal tubule and finally to the collecting duct. Collecting duct collects urine from many nephrons.
f. The urine formed in each kidney enters a long tube called ureter. From ureter, it gets transported to the urinary bladder and then into the urethra.
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Shriyancs Ambitious
1. Nephron has a cup shaped upper end, called bowman's capsule.It contains a bundle of blood capillaries, called glomerulus.
2. The blood entering into the glomerulus carries waste materials which are filtered out in the bowman's capsule. Filtration is possible because the walls of glomerular capillaries and Bowman's capsule are very thin and are selectively permeable.
3. This property of membranes allows water and small molecules in the blood to pass through them.Once the waste materials is filtered out, the blood free from these waste materials goes into renal veins from where it goes into the heart through posterior Vena cava.
4. The fluid containing waste materials is forced out of the glomerular capillaries in the Bowman's capsule.
5. The filtered out fluid is known as glomerular filtrate which contains sodium,potassium and chloride ions,glucose,amino acids along with urea,uric acid and a large amount of water.
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