What is the Origin of Vasopressin Effects?

The term combines the hormone name "Vasopressin," derived from its observed action of "pressing" or constricting "vessels" to raise blood pressure, with "effects," describing its biological outcomes. The alternate name, ADH, emphasizes its primary action on the kidney to prevent excessive water loss. This dual nomenclature reflects its two major physiological roles.

What is the Mechanism of Vasopressin Effects?

Vasopressin acts through two primary receptor subtypes: it binds to V2 receptors located in the renal collecting ducts, which initiates a cascade that increases the insertion of aquaporin channels, thus maximizing water reabsorption and conserving body fluid. Simultaneously, it acts on V1 receptors found on vascular smooth muscle cells, triggering potent vasoconstriction. This dual mechanism ensures precise control over both circulating volume and systemic arterial pressure.

Vasopressin Effects ∞ Area

Vasopressin Effects

Meaning

Vasopressin Effects are the broad and vital physiological actions mediated by the neurohormone vasopressin, also known as Antidiuretic Hormone (ADH), which is a peptide hormone synthesized in the hypothalamus and released by the posterior pituitary. Its primary functions are the meticulous regulation of body water balance, systemic blood pressure, and vascular tone. The effects of vasopressin are absolutely critical for maintaining fluid homeostasis and plasma osmolality in the human body.