MEDICINE MCQ
RENAL MEDICINE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Substance that in the renal arteriolar endothelium produces afferent arteriolar vasodilatation and efferent arteriolar vasoconstriction
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Endothelial
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Atrial Natriuretic Peptide
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Nitric oxide
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Angiotensin II
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Explanation:
Detailed explanation-1: -ANP stimulates vasodilation of the afferent arteriole of glomerulus: this results in increased renal blood flow and an increase in glomerular filtration rate.
Detailed explanation-2: -ATP is released and calcium increases in granular and smooth muscle cells of the afferent arteriole. This causes arteriole constriction and decreased renin release.
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