Hormone: Hormone as Messenger and Regulator
The secretion of all endocrine glands is termed as hormone (Gr. Hormoeine-to set in motion). It was first discovered by Bayliss and Starling in 1902. A hormone can be defined as "a chemical substance produced in one part of the body and carried by blood to a target organ where it regulates certain process." Therefore, hormones are informational molecules or [...]