Question NO. OS
Statement(A): Atrial natriuretic peptide (ANP) mechanism acts as a counter check on the RAAS (Renin-Angiotensin-
Aldosterone system)
Statement (B): ANP causes contraction of vascular smooth muscles
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statement (A):NPs affect the kidneys by increasing glomerular filtration rate (GFR) and filtration fraction, which produces natriuresis (increased sodium excretion) and diuresis (increased fluid excretion). ... To summarize, natriuretic peptides serve as a counter-regulatory system for the renin-angiotensin-aldosterone system (RAAS).
Statement (B) :The ANP include decrease in [Ca2+]ion during the constraction induced by high Na+/Ca2+ exchange in vascular smooth muscle. OR you can write; the smooth muscle cell directly drives the contraction of the vascular wall
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