leads to estradiol secretion from ovaries
melatonin
released by alpha cells of the pancreas
leads to secretion of testosterone from testes
released in response to high blood concentration of Ca2+
establishes circadian rhythm
calcitonin
acts on thyroid gland follicles
released in response to high blood concentration of Ca2+
parathyroid hormone
follicle stimulating hormone
insulin
glucagon
leads to glucose uptake in most tissues
thyroid stimulating hormone
luteinizing hormone