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Excretory System Hormones
Excretory system hormones involved in maintaining normal kidney function. Origins, targets organs and physiological responses.
10
Biology
12th Grade
07/15/2016

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Term
Antidiuretic Hormone (ADH) Origin
Definition
Produced by the hypothalamus, stored and released by the pituitary gland.
Term
Antidiuretic Hormone (ADH) Target Organ
Definition
The kidneys.
Term
Antidiuretic Hormone (ADH) Physiological Response
Definition

Causes the kidneys to reabsorb more water and concentrate the urine by making the upper sections of the distal tubules as well as the entire collecting duct permeable to water. This conserves water.

Term
Aldosterone Origin
Definition
Produced in the cortex of the adrenal gland, above the kidney and secreted by the adrenal gland.
Term
Aldosterone Target Organ
Definition
The kidneys, specifically the nephrons.
Term
Aldosterone Physiological Response
Definition
Causes nephrons to reabsorb Na+(aq) from the distal tubule and collecting duct resulting in a high solute concentration. This increases the blood pressure because H20 follows the Na+(aq) due to osmosis.
Term
Angiotensin 1 Origin
Definition
Produced when renin catalyzes a reaction converting the protein angiotensinogen, which is produced and secreted by the liver.
Term
Angiotensin 11 Origin
Definition
Produced when angiotensin 1 is converted by angiotensin-converting enzyme (ACE) in the lungs.
Term
Angiotensin 11 Target Organ
Definition
The blood vessels and adrenal gland.
Term
Angiotensin 11 Physiological Response
Definition
Initiates vasoconstriction causing the blood pressure to increase and initiates the release of aldosterone.
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