British Sign Language Glossaries of Curriculum Terms

BSL Environmental Science Glossary - Hormone definition

Definition: Hormones are chemical substances produced by endocrine glands and will travel through the bloodstream to alter the activity of specific target organs. The body uses hormones to communicate (through the bloodstream). Hormones are produced in the endocrine glands, which are situated in various parts of the body. Hormones carry out different functions and alter the activity of specific target organs. For example, the adrenal gland will release a hormone called adrenaline. It will travel through the bloodstream to the heart, triggering it to beat more rapidly.