The Ecology of Humans (26-34) Pituitary

 Pituitary

All vertebrates have a pituitary gland with similar functions, though structures vary.

The 0.5-gram, pea-sized pituitary is not part of the brain. It is a ductless gland that regulates many autonomic functions, including temperature, water balance, metabolism, blood pressure, pain relief, sex organ functioning, and growth. The hormones secreted by the pituitary gland stimulate and control almost all other endocrine glands in the body.