Final answer:
Option 2). The other name for Prolactin-inhibiting factor is dopamine, which also regulates the release of prolactin, affecting milk production after childbirth.
Step-by-step explanation:
Dopamine is another term for prolactin-inhibiting factor. The hormone dopamine, which is generated by the hypothalamus, prevents the anterior pituitary gland from releasing prolactin. The main component that inhibits prolactin is dopamine, which is produced into the portal hypophyseal arteries by the tuberoinfundibular dopaminergic neurons. After childbirth, females produce more milk when prolactin is present. Prolactin-releasing hormone (PRH) increases the production of prolactin, while prolactin-inhibiting hormone (PIH) suppresses it. Dopamine is the recognized prolactin-inhibiting hormone. Hence, Dopamine is also called as Prolactin-inhibiting factor. Thus, Option 2) is the correct answer.