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NEETZoologyExcretory Products and their Elimination

A person experiences a significant increase in body fluid volume and blood pressure, leading to increased blood flow to the atria of the heart. Which of the following regulatory responses will be initiated to maintain homeostasis?

Options

  1. ARelease of Atrial Natriuretic Factor (ANF) from the atrial wall
  2. BActivation of juxtaglomerular (JG) cells to release renin
  3. CSecretion of aldosterone from the adrenal cortex
  4. DRelease of antidiuretic hormone (ADH) from the neurohypophysis

Correct answer

A. Release of Atrial Natriuretic Factor (ANF) from the atrial wall

Step-by-step solution

An increase in blood flow to the atria of the heart triggers the release of Atrial Natriuretic Factor (ANF) from the atrial wall. ANF causes vasodilation and decreases blood pressure, acting as a check on the renin-angiotensin mechanism. High blood volume and elevated blood pressure suppress the release of renin from JG cells, aldosterone from the adrenal cortex, and ADH from the neurohypophysis, as these hormones function to increase blood volume and pressure. Answer: Release of Atrial Natriuretic Factor (ANF) fro

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