renin-angiotensin system: Quick Facts

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Diagram showing the renin-angiotensin system: a drop in blood pressure or fluid volume triggers renin release from the kidneys, leading to a cascade involving the liver, lungs, adrenal gland, and blood vessels. This results in blood vessel constriction and increased salt and water reabsorption by the kidneys to regulate blood pressure.

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blood pressure angiotensin I angiotensin II Renin angiotensin Endocrine system Enzyme thyroid gland adrenal gland pancreas pituitary gland hypothalamus pineal gland thymus parathyroid gland kidney gonad