Packet 8: Tossup 21

This hormone can aggregate with Ig·G to form a “big big” variant that exhibits minimal biological activity. Hypersecretion of this hormone in individuals with the most prevalent form of macro·adenoma is often corrected using caber·goline. Some functions of this hormone and somato·tropin (15[1])are mimicked by hCS in the placenta. (15[1])Antipsychotics can cause the overproduction of this hormone by blocking the tubero·infundibular pathway from releasing (*) dopamine. Should one action occur, levels of this hormone decrease steadily and oscillate while estrogen and progesterone levels (-5[1])decrease rapidly after childbirth. (-5[1])This hormone and oxytocin stimulate the ejection of an Ig·A-rich substance during a let-down reflex, which is triggered by suckling. For 10 points, what hormone stimulates the mammary glands to produce breast milk? ■END■ (10[1]0[2])

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