44. The kidneys are stimulated to produce renin A.When the pH of the urine decreases B.When the specific gravity of urine rises above 1.10 C.When the peritubular capillaries are dilated D.By a decrease in the blood pressure
Answer: Option D Solution: The secretion of renin is stimulated by the following three factors: When a fall in arterial blood pressure is detected by pressure sensitive receptors (baroreceptors) in the arterial vessels. When a decrease in sodium chloride (salt) is detected in the kidney by the macula densa in the juxtaglomerular apparatus.
