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Angiotensin II affects the kidney in various ways:

1) it stimulates the secretion of aldosterone from the adrenal cortex which causes the tubules of the kidneys to increase reabsorption of sodium(Na) and water into the blood increasing the volume of fluid in the body. This can be very useful in cases of hypovolemia(low blood volume).

2) it acts as a vasoconstrictor, thereby increasing test and blood pressure.

3) it stimulates the secretion of anti-diuretic hormone, also called vasopressin which stimulates the reabsorption of water in the kidneys and also acts as a vasoconstrictor.

4)it increases renal hypertrophy in renal tubule cell leading to an increase in Na intake.

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14y ago

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