Correct option is D
Ans. (d) Galactokinesis
Sol. Galactokinesis refers to the ejection or release of milk from the mammary glands, primarily controlled by the hormone oxytocin. The milk ejection reflex (let-down reflex) occurs in response to suckling or mechanical stimulation, leading to contraction of myoepithelial cells in the mammary alveoli.
Explanation of each option:
· (a) Galactopoiesis – Incorrect. It refers to the maintenance of lactation and continued milk secretion.
· (b) Mammogenesis – Incorrect. It describes the development of mammary glands during puberty and pregnancy.
· (c) Lactogenesis – Incorrect. It refers to the initiation of milk production after childbirth.
· (d) Galactokinesis – Correct answer. It is the ejection of milk during breastfeeding, triggered by oxytocin.