19.3 FUNCTION OF THE TUBULES
Hien of
Proximal Convoluted Tubule (PCT): PCT is lined by simple cuboldas brush border epithelium which increases the surface area for reabsorption Nearly all of the essential nutrients. and 70-80 per cent of electrolyk and water are reabsorbed by this segment. PCT also helps to maintar the pH and ionic balance of the body fluids by selective secretion c hydrogen ions, ammonia and potassium ions into the filtrate and by absorption of HCO3 - from it.
Henle's Loop: Reabsorption is minimum in its ascending limb However, this region plays a significant role in the maintenance of hilf osmolarity of medullary interstitial fluid. The descending limb of loopd Henle is permeable to water but almost impermeable to electrolytes. Thi concentrates the filtrate as it moves down. The ascending limb passively. Therefore, as the concentrated filtrate pass upward, it diluted due to the passage of electrolytes to the medullary fluid.
Distal Convoluted Tubule (DCT): Conditional reabsorption of \ 1andwatertakesplaceinthissegment.DCTisalsocapableofreabsorptixof\mathrm{HCO}_{3}−andselectivesecretionofhydrogenandpotassiumionsari\mathrm{NH}_{3}tomaintainthe\mathrm{pH}$ and sodium-potassium balance in blood.

Question

19.3 FUNCTION OF THE TUBULES
Hien of
Proximal Convoluted Tubule (PCT): PCT is lined by simple cuboldas brush border epithelium which increases the surface area for reabsorption Nearly all of the essential nutrients. and 70-80 per cent of electrolyk and water are reabsorbed by this segment. PCT also helps to maintar the pH and ionic balance of the body fluids by selective secretion c hydrogen ions, ammonia and potassium ions into the filtrate and by absorption of HCO3​ - from it.
Henle's Loop: Reabsorption is minimum in its ascending limb However, this region plays a significant role in the maintenance of hilf osmolarity of medullary interstitial fluid. The descending limb of loopd Henle is permeable to water but almost impermeable to electrolytes. Thi concentrates the filtrate as it moves down. The ascending limb passively. Therefore, as the concentrated filtrate pass upward, it diluted due to the passage of electrolytes to the medullary fluid.
Distal Convoluted Tubule (DCT): Conditional reabsorption of \ 1andwatertakesplaceinthissegment.DCTisalsocapableofreabsorptixof\mathrm{HCO}_{3}−andselectivesecretionofhydrogenandpotassiumionsari\mathrm{NH}_{3}tomaintainthe\mathrm{pH}$ and sodium-potassium balance in blood.

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Question Text	$19.3$ FUNCTION OF THE TUBULES Hien of Proximal Convoluted Tubule (PCT): PCT is lined by simple cuboldas brush border epithelium which increases the surface area for reabsorption Nearly all of the essential nutrients. and 70-80 per cent of electrolyk and water are reabsorbed by this segment. PCT also helps to maintar the $pH$ and ionic balance of the body fluids by selective secretion c hydrogen ions, ammonia and potassium ions into the filtrate and by absorption of $HCO_{3}$ - from it. Henle's Loop: Reabsorption is minimum in its ascending limb However, this region plays a significant role in the maintenance of hilf osmolarity of medullary interstitial fluid. The descending limb of loopd Henle is permeable to water but almost impermeable to electrolytes. Thi concentrates the filtrate as it moves down. The ascending limb passively. Therefore, as the concentrated filtrate pass upward, it diluted due to the passage of electrolytes to the medullary fluid. Distal Convoluted Tubule (DCT): Conditional reabsorption of \ 1 $an d w a t er t ak es pl a ce in t hi sse g m e n t . D CT i s a l soc a p ab l eo f re ab sor pt i x o f$ \mathrm{HCO}_{3} $- an d se l ec t i v esecre t i o n o f h y d ro g e nan d p o t a ss i u mi o n s a r i$ \mathrm{NH}_{3} $t o main t ain t h e$ \mathrm{pH}$ and sodium-potassium balance in blood.
Updated On	Feb 18, 2023
Topic	Human Physiology
Subject	Biology
Class	Class 12
Answer Type	Video solution: 2
Upvotes	184
Avg. Video Duration	8 min

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