Oxytocin is a naturally occurring peptide hormone composed of nine amino acids, primarily synthesized in the hypothalamus and released by the posterior pituitary gland. In scientific research, oxytocin has attracted significant attention due to its involvement in complex physiological signaling pathways. It interacts with specific oxytocin receptors distributed throughout the brain and peripheral tissues, influencing cellular communication, signal transduction, and regulatory feedback mechanisms. Researchers continue to investigate how oxytocin modulates intracellular calcium levels, receptor sensitivity, and downstream molecular cascades.