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Choose the correct option for the marked place.(a) Decrease of calcium ion(b) Increasing contractility(c) Increase of fluid volume(d) Decrease of fluid volumeI got this question at a job interview.I want to ask this question from Histamine, Bradykinin and Their Antagonists topic in chapter Histamine, Bradykinin and their Antagonists, Pharmacotherapy of Gastric Ulcer, Peptic Ulcer of Drug Biotechnology

Answer»

Right CHOICE is (b) Increasing contractility

Easy EXPLANATION: Stress leads to DECREASED filtration surface for the nephrons, over activity of the sympathetic nervous system and excess secretion of renin-angiotensin. Over activity of the sympathetic nervous system leads to an increase of the contractility of the blood vessel. Thus narrowing of the blood vessel means more FLUID flowing through a narrow route and an increase of the pressure per sq. centimetre. This increases the blood pressure.



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