Vasopressin

Definition

Vasopressin is a hormone produced by the hypothalamus and stored in the posterior pituitary gland. It primarily acts to regulate water balance in the body and constrict blood vessels.

5 Must Know Facts For Your Next Test

1. Vasopressin is also known as antidiuretic hormone (ADH).
2. It plays a crucial role in reducing urine output by increasing water reabsorption in the kidneys.
3. Vasopressin can be used clinically to treat diabetes insipidus, a condition characterized by excessive thirst and urination.
4. It has vasoconstrictive properties, which can help increase blood pressure in patients with hypotension.
5. Synthetic analogs of vasopressin are used in some emergency situations, such as cardiac arrest.

Review Questions

• What are the primary functions of vasopressin?
• How does vasopressin affect kidney function?
• In what clinical scenarios might synthetic vasopressin be used?

Related terms

Antidiuretic Hormone (ADH): A hormone that helps control water balance by reducing urine production.

Diabetes Insipidus: A disorder caused by insufficient production or response to ADH, leading to excessive urination and thirst.

Hypothalamus: A region of the brain that produces hormones regulating many bodily functions including temperature and thirst.