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Home Q & A Board Biology-Related Homework Help Anatomy and Physiology
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colleen colleen
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10 years ago
Discuss how renin and angiotensin II help restore low blood pressure to normal.
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10 years ago
When blood pressure is low, the kidneys release an enzyme called renin. Renin, in turn, triggers the production of angiotensin II. As a result, angiotensin II triggers the release of aldosterone by the adrenal cortex. Aldosterone targets the kidney and promotes sodium reabsorption by the tubule cells of the kidney; water follows and is also reabsorbed when aldosterone is present in the kidney. The increased blood volume, due to water reabsorption, leads to increased blood pressure. 
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