Question

What is the primary role of oxytocin in the mammary glands during lactation?

विकल्प

• To promote duct growth and branching

• To suppress premature milk ejection during pregnancy

• To trigger milk ejection by contracting myoepithelial cells

• To stimulate milk synthesis in alveolar cells

Answer 1

Oxytocin, released by the posterior pituitary, triggers the let-down (milk ejection) reflex by causing myoepithelial cells surrounding the alveoli to contract. This contraction squeezes milk through the mammary tubules, ducts, and out through the nipple when the infant suckles.