Question:

Removal of proximal convoluted tubule from the nephron will result in

Updated On: Jul 28, 2022
  • no change in quality and quantity of urine
  • no urine formation
  • more diluted urine
  • more concentrated urine.
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The Correct Option is C

Solution and Explanation

The removal of proximal convoluted tubule from the nephron results in lack of reabsorption of high threshold substance from renal tubules and obligatory reabsorption of water is also affected leading to more diluted urine. Since, proximal convoluted tubule is mainly associated with reabsorption of much water by osmosis, reabsorption of glucose and amino acids by secondary active transport and other salts and ions as $Na ^{+}, K ^{+}$, vitamins act by primary active transport.
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Concepts Used:

Excretory System

Excretory System Organs:

The human excretory system organs include:

  • A pair of kidneys
  • A pair of ureters
  • A urinary bladder
  • A urethra

Read More: Excretion in Human Beings

Kidneys:

The organ that has an inner concave structure is the kidney. The blood vessels, nerves, and ureters enter the kidneys through the hilum, which is a notch in the inner concave surface of the kidney. The renal pelvis, a large funnel-shaped space, present inside the hilum, has many projections, called calyces.

Ureter:

A pair of thin muscular tubes called the ureter comes out of each kidney outstretched from the renal pelvis. It is the carrier of urine from the kidney to the urinary bladder.

Urinary Bladder:

It is a muscular sac-like structure, where urine is stored. The urinary bladder is being emptied by the process of micturition, which acts as urination.

Urethra:

This tube rises from the urinary bladder and helps to throw urine out of the body. In males, it works as the common route for sperms and urine. Sphincter muscles guard the opening of the urethra.

Read More: Excretion