Tag: Intracellular calcium

Oxytocin, often referred to as the "love hormone," plays a vital role in childbirth, lactation, and social bonding. Understanding **what is the primary mechanism of action of oxytocin** reveals how this small, nine-amino-acid peptide can have such profound physiological and neurological effects. The process fundamentally relies on triggering an increase in intracellular calcium levels within target cells.

Vasoconstrictor medications play a crucial role in managing hypotensive states and controlling localized bleeding. At their core, the mechanism of action of vasoconstrictors involves stimulating the contraction of vascular smooth muscle, which narrows blood vessels, increases systemic vascular resistance, and raises blood pressure.