WBCS.LIVE practice question

Which specific hormone is primarily responsible for the rapid ejection of milk from the mammary glands after childbirth?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. Prolactin
  2. Oxytocin
  3. Estrogen
  4. Progesterone

Correct answer and explanation

Correct answer: Oxytocin

Explanation: āœ… Correct Answer: B) Oxytocin šŸ“š Explanation: While the hormone prolactin is responsible for the actual biological production of breast milk, oxytocin is the hormone strictly responsible for its ejection or "let-down" reflex. Oxytocin is released from the posterior pituitary gland in response to suckling, causing the mammary smooth muscles to aggressively contract and release the milk.