Which hormone is responsible for stimulating milk production in females?

• A. Oxytocin
• B. Prolactin
• C. Estrogen
• D. Testosterone

Answer: (B)

Prolactin is the hormone primarily responsible for stimulating milk production in females. It is produced by the anterior pituitary gland and plays a crucial role in lactation. During pregnancy, prolactin levels rise to prepare the mammary glands for milk production, and after childbirth, it continues to promote the synthesis of milk in response to suckling by the infant. This hormonal mechanism ensures that mothers can provide adequate nutrition to their newborns.

In contrast, oxytocin, while also important in the context of lactation, primarily facilitates the ejection of milk from the mammary glands rather than its production. Estrogen and testosterone are hormones primarily associated with sexual characteristics and reproductive functions rather than milk production. Therefore, the role of prolactin is distinct and vital for the physiological process of lactation.