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The ANF and Its Functions

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Question

All the statements about atrial natriuretic factor are correct but one is wrong. Which one is wrong?

A

The walls of the atria of the heart release ANF in response to an increase in the blood volume and pressure.

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B

ANF can increase GFR.

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C

ANF is released in response to a decrease in blood volume and blood pressure.

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D

ANF inhibits the release of renin from the JGA and reduces aldosterone release from adrenal gland.

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Solution

The correct option is C ANF is released in response to a decrease in blood volume and blood pressure.
ANF is released in response to an increase in blood volume and blood pressure.

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Similar questions

Q. Assertion :ADH and RAAS work in response to low blood volume and blood pressure. Reason: ANF works in response to high blood volume and blood pressure.

Q. Which of the following statement/statements is/are incorrect?
I) ADH is released if blood has low osmolarity.
II) ADH is released if blood has high osmolarity.
III) Aldosterone facilitates water reabsorption.
IV) ANF causes vasoconstriction.
V) ADH increases water reabsorption.

Q. Atrial natriuretic factor is released in response to

This section contains 1 Assertion-Reason type question, which has 4 choices (a), (b), (c) and (d) out of which ONLY ONE is correct.

इस खण्ड में 1 कथन-कारण प्रकार का प्रश्न है, जिसमें 4 विकल्प (a), (b), (c) तथा (d) दिये गये हैं, जिनमें से केवल एक सही है।

A : ANF is released by the myocytes of the atrial wall in response to increase in blood volume and hypotension.

A : ANF का मोचन, रक्त आयतन में वृद्धि और अल्प तनाव के प्रति अनुक्रिया में अलिंद भित्ति की मायोसाइट्स द्वारा होता है।

R : ANF can cause vasodilation, ANF along with ADH and RAAS provide an elaborate system of checks and balance that regulate the kidney functioning, to control body fluid osmolarity, salt concentrations, blood pressure and blood volume.

R : ANF के कारण वाहिकाविस्फारण हो सकता है, ADH और RAAS के साथ ANF, नियंत्रण एवं संतुलन का एक विस्तृत तंत्र प्रदान करता है जो शरीर के तरल की परासरणता, लवण सांद्रता, रक्त दाब तथा रक्त आयतन को नियंत्रित करने के लिए वृक्क कार्य का नियमन करता है।

This section contains 1 Assertion-Reason type question, which has 4 choices (a), (b), (c) and (d) out of which ONLY ONE is correct.

इस खण्ड में 1 कथन-कारण प्रकार का प्रश्न है, जिसमें 4 विकल्प (a), (b), (c) तथा (d) दिये गये हैं, जिनमें से केवल एक सही है।

A : Hypotension causes the release of Atrial Natriuretic Factor (ANF) from the atria of the heart.

A : अल्प तनाव के कारण हृदय के अलिंद से अलिंदीय नेट्रियूरेटिक कारक (ANF) का मोचन होता है।

R : ANF causes the blood vessels to dilate.

R : ANF के कारण रक्त वाहिनियाँ फैल जाती हैं।

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