Question

Assertion : Stimulation of renin secretion will increase the volume of extracellular fluid (ECF). Reason : Increased ECF occurs due to decreased active reabsorption of Na+.

• A. If both assertion and reason are true and reason is the correct explanation of assertion
• B. If both assertion and reason are true but reason is not the correct explanation of assertion
• C. If assertion is true but reason is false
• D. If both assertion and reason are false

Answer 1

Answer: (C)

When ECF secretion decreases, renin release is stimulated which reduces Na+ excretion, which in turn increases volume of ECF. When sodium intake exceeds sodium output by the kidneys, total body sodium and extracellular fluid volume increases.