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In which segment of the nephron most of the re-absorption of substances takes place?

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प्रश्न

In which segment of the nephron most of the re-absorption of substances takes place?

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उत्तर

In proximal convoluted tubule cells, Glucose, lactate, amino acids, Na+ and water, are reabsorbed. In the descending limb of Henle’s loop, water is reabsorbed. In the ascending limb, Na+, Cl and K+ are reabsorbed. In the distal convoluted tubule, water is reabsorbed.

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पाठ 8: Excretion - Evaluation [पृष्ठ १४६]

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सामाचीर कलवी Biology (Zoology) [English] Class 11 TN Board
पाठ 8 Excretion
Evaluation | Q 5. | पृष्ठ १४६
सामाचीर कलवी Zoology [English] Class 11 TN Board
पाठ 8 Excretion
Evaluation | Q 5. | पृष्ठ १५०

संबंधित प्रश्‍न

Put a tick mark (✓) against the most appropriate alternative in the following statement : 

 Besides water, the urine mainly contains :


Fill in the blank : 

Evaporation of sweat from the skin surface has ............... effect.


Define the following: 

Dialysis


Where in the urinary system do the following processes take place?

  1. Urine formation: ______.
  2. Transport of urine away from kidney: ______.
  3. Temporary storage of urine: ______.

State if the following statement is true or false. Correct the statement if it is false. 

The Bowman’s capsule and glomerulus together form the Malpighian body. 


Answer the following in detail.

Explain the structure of a nephron with the help of a diagram.


Define the following term:

Ultrafiltration


Which segment is the site of secretion and regulated reabsorption of ions and pH homeostasis?


What solute is normally present in the body to estimate GFR in humans?


If Henle’s loop were absent from mammalian nephron, which one of the following is to be expected?


Identify the biological term

A liquid which gathers in the bladder.


Identfiy the biological term

Temporary storage of urine.


Identify the biological term

A ball of inter twined capillaries.


Filtration of the blood takes place at ______. 


Complete the following:

Urinary excretion = Tubular reabsorption + Tubular secretion –


A large quantity of fluid is filtered every day by the nephrons in the kidneys. Only about 1% of it is excreted as urine. The remaining 99% of the filtrate ______.


Write full form of the following abbreviation:

DCT


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