Question

what is melatonin harmon? describe it's function? ​

Answer 1

Explanation:

HEY MATE

Melatonin, hormone secreted by the pineal gland, a tiny endocrine gland situated at the centre of the brain. Melatonin was first isolated in 1958 by American physician Aaron B. Lerner and his colleagues at Yale University School of Medicine. They gave the substance its name on the basis of its ability to lighten skin colour in frogs by reversing the skin-darkening effects of melanocyte-stimulating hormone. Melatonin, a derivative of the amino acid tryptophan, is produced in humans, other mammals, birds, reptiles, and amphibians.