ADH

Definition

ADH (Antidiuretic Hormone) is a hormone produced by the hypothalamus and stored in the pituitary gland that helps regulate water balance in the body. It acts on the kidneys to reduce urine production by increasing water reabsorption.

5 Must Know Facts For Your Next Test

1. ADH is also known as vasopressin.
2. It plays a crucial role in maintaining blood pressure.
3. ADH secretion is stimulated by increased plasma osmolality or decreased blood volume.
4. Drugs like desmopressin mimic ADH's effects for treating conditions like diabetes insipidus.
5. Excessive ADH can lead to a condition called SIADH (Syndrome of Inappropriate Antidiuretic Hormone).

Review Questions

• What triggers the release of ADH?
• How does ADH affect kidney function?
• Name a drug that mimics the action of ADH.

Related terms

Desmopressin: A synthetic analog of ADH used to treat diabetes insipidus and bedwetting.

SIADH: A disorder characterized by excessive release of ADH, leading to water retention and hyponatremia.

Vasopressin Receptors: Receptors in the kidneys and blood vessels that mediate the actions of ADH.