The smell that first hits you when you open a bag of popcorn is perhaps one of the most satisfying, but it may be harmful to your health.
Chemical Nature of Hormones. Chemically, hormones may be classified as either proteins or steroids. All of the hormones in the human body, except the sex hormones and those from the adrenal cortex, are proteins or protein derivatives.ome endocrine glands secrete hormones in response to other hormones. The hormones that cause secretion of other hormones are called tropic hormones. A hormone from gland A causes gland B to secrete its hormone.
Hormones are a kind of biochemical messengers. Most hormones are chemical substances produced by specialized tissue formations called endocrine glands. The substances are secr â¦ eted directly into the bloodstream, other body fluids, or into adjacent tissues.The purpose of hormones is to regulate metabolic activity of some other organs or tissues of the body.pinephrine and norepinephrine are the two hormones secreted by the  adrenal medulla. These adrenal hormones are classified as  catecholamine's which are chemical compounds â¦ made in the body from  the amino acid tyrosine.