Question:

The net pressure gradient that causes the fluid to filter out of the glomeruli into the capsule is:

Updated On: May 5, 2024
  • 20 mm Hg

  • 75 mm Hg

  • 30 mm Hg

  • 50 mm Hg

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The Correct Option is A

Solution and Explanation

The net pressure gradient that causes fluid to filter out of the glomeruli into the capsule in the renal corpuscle (part of the kidney) is typically around 20 mm Hg. This pressure gradient is a result of the difference between the blood pressure in the glomerular capillaries (higher pressure) and the opposing pressures created by the capsular hydrostatic pressure and the colloid osmotic pressure of plasma proteins. 

So, the correct answer is (A): 20 mm Hg

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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