NEET · Biology · STD 11 - 16. Excretory product and their elimination
Which of the following does not favour the formation of large quantities of dilute urine?
- A Renin
- B Atrialnatriuretic factor
- C Alcohol
- D Caffeine
Answer & Solution
Correct Answer
(A) Renin
Step-by-step Solution
Detailed explanation
(a) : Angiotensinogen is an \(\alpha\)-globulin protein produced by liver. Renin serves as an enzyme in the conversion of the plasma protein angiotensinogen into angiotensin. This protein stimulates the adrenal cortex to produce aldosterone which acts on the cells of the ascending limb of the loop of Henle, and increases the rate of reabsorption of \(Na^+\). Reabsorption of \(Na^+\) brings about the uptake of an osmotically equivalent amount of water. Absorption of sodium and water increases blood volume and pressure.
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