Question

Which of the following correctly describes Atrial Natriuretic Factor (ANF)?

• A. Released from the atria
• B. Acts as a vasodilator
• C. Causes low blood pressure
• D. None of the above

Hint:

ANF stands for Atrial Natriuretic Factor — the name itself indicates that it is released from the atria.

Answer 1

The Correct Option is A

Step 1: Understand what ANF is
Atrial Natriuretic Factor (ANF) is a hormone produced by the atria of the heart, particularly in response to increased blood volume or pressure. Step 2: Analyze each option (A) Released from the atria
This is correct. ANF is synthesized and released specifically by the cardiac atrial myocytes when they are stretched due to increased blood volume or pressure. (B) Acts as a vasodilator
While this is true, the question asks for the description of ANF, not its effects. This makes it a secondary characteristic, not the primary defining one. (C) Causes low blood pressure
This is an effect of ANF activity, not a direct description of what ANF is. (D) None of the above
This is incorrect, as option (A) is accurate. Step 3: Conclusion The most accurate and direct description of ANF is: $$ (A) Released from the atria $$