Which of the following is a Prolactin-inhibiting hormone?

Correct option is A

Ans: (a) Dopamine Sol. Dopamine is a prolactin-inhibiting hormone. It plays a crucial role in the regulation of prolactin secretion from the anterior pituitary gland. Dopamine inhibits the release of prolactin, a hormone responsible for stimulating milk production in the breasts after childbirth.
Explanation of each option:
· (a) Dopamine: Correct answer. Dopamine acts as a prolactin-inhibiting hormone, helping to regulate and inhibit prolactin secretion.
· (b) Adrenaline: Adrenaline is a hormone produced by the adrenal glands that plays a key role in the "fight or flight" response, but it does not inhibit prolactin.
· (c) Noradrenaline: Noradrenaline (or norepinephrine) is a neurotransmitter and hormone involved in the body's response to stress and alertness but does not specifically inhibit prolactin.
· (d) CRH: Corticotropin-releasing hormone (CRH) is involved in the stress response and stimulates the release of ACTH (adrenocorticotropic hormone), but it does not inhibit prolactin secretion.