Pinealectomy in chickens consistently produces scoliosis with lordosis, ertebral rotations, and rib humps, which hae anatomic characteristics similar to those of human idiopathic scoliosis.
So, for example, a pinealoma may lead to increased secretion of the hormone beta human chorionic gonadotropin that can cause an early onset of puberty.
As the world goes dark, this master switch tells our pineal gland to increase levels of the hormone melatonin in the bloodstream, sort of like a chemical lullaby.
医学百科 The Medicine Book (Big Ideas Simply Explained)
Hormones are made by specialised cells mostly found in the endocrine glands, the hypothalamus, testes and ovaries, and the thyroid, parathyroid, pituitary, adrenal and pineal glands.