A question on Antinauratic(ANP) will cause what effect?Increase reabsorption at kidney Increase heart rateConstriction of Veinsdecrease in cardiac output

Antinatriuretic peptide (ANP) is a hormone produced by the heart that plays a key role in regulating blood pressure and fluid balance. Here’s a breakdown of the effects of ANP:

1. Increase Reabsorption at Kidney: ANP actually promotes natriuresis, which is the excretion of sodium through the urine. This does not increase reabsorption; rather, it promotes the excretion of sodium and water, leading to a decrease in blood volume.

2. Increase Heart Rate: ANP typically acts to lower blood pressure and may actually lead to a decrease in heart rate as a compensatory mechanism due to its vasodilatory effects.

3. Constriction of Veins: ANP causes vasodilation rather than constriction. It relaxes blood vessels, reducing blood pressure and increasing renal blood flow.

4. Decrease in Cardiac Output: By reducing blood volume and promoting vasodilation, ANP can lead to a decrease in cardiac output, as less blood return to the heart can reduce the stroke volume.

Final Answer

The correct effect of Antinatriuretic peptide (ANP) is a decrease in cardiac output.