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Assertion: The wall of the atria responds to elevated blood pressure (B.P.) and blood volume by releasing atrial natriuretic factor (ANF).
Reason: ANF functions as a vasodilator while simultaneously suppressing the release of renin, thereby contributing to the reduction of blood pressure.
Both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.
Both Assertion & Reason are True but Reason is not a correct explanation of the Assertion.
Assertion is True but the Reason is False.
Both Assertion & Reason are false.
Answers (1)
The assertion states that the wall of the atria responds to elevated blood pressure (B.P.) and blood volume by releasing Atrial Natriuretic Factor (ANF). This statement is true. The cells in the atrial walls have specialized granules that contain ANF and they release this hormone in response to increased stretching of the atrial walls caused by high blood pressure and blood volume. ANF is released as a counter-regulatory mechanism to help regulate blood pressure and fluid balance.
The reason given is that ANF functions as a vasodilator while simultaneously suppressing the release of renin, thereby contributing to the reduction of blood pressure. This is also true. ANF acts on blood vessels, causing them to dilate, which leads to a decrease in peripheral resistance and a subsequent decrease in blood pressure. Additionally, ANF inhibits the release of renin, an enzyme involved in the renin-angiotensin-aldosterone system, which is responsible for regulating blood pressure. By inhibiting renin release, ANF further helps to reduce blood pressure.
Therefore, option 1 accurately states that both the assertion and the reason are true, and the reason provides a correct explanation for the observed phenomenon.Hence, the correct answer is option 1.
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