Question

In the mammary glands

A. Milk formation is stimulated by oestrogen and progesterone.

B. Milk formation can be depressed by hypothalamic activity.

C. Maintenance of lactation depends on suckling.

D. Lactation ceases if the anterior pituitary gland is destroyed.

E. Milk ejection ceases if the posterior pituitary gland is destroyed.

Answer 1

A. False These depress milk formation during pregnancy; prolactin stimulates milk formation.

B. True By release of prolactin-inhibiting hormone (dopamine).

C. True This causes prolactin secretion which initiates and maintains lactation after delivery.

D. True Milk formation ceases due to loss of prolactin.

E. True Due to loss of oxytocin in response to suckling.