Hormone - Wikipedia
Hormones are required for the normal development of animals, plants and fungi. Due to the broad definition of a hormone (as a signaling molecule that exerts its effects far from its site of …
Hormones: What They Are, Function & Types - Cleveland Clinic
What are hormones? Hormones are chemicals that coordinate different functions in your body by carrying messages through your blood to your organs, skin, muscles and other tissues. These …
Hormone | Definition, Function, & Types | Britannica
Dec 26, 2025 · A hormone is an organic substance secreted by plants and animals that functions in the regulation of physiological activities and in maintaining homeostasis. Hormones carry …
Hormones and the Endocrine System - Johns Hopkins Medicine
The endocrine system uses hormones to control and coordinate your body's internal metabolism (or homeostasis) energy level, reproduction, growth and development, and response to injury, …
Hormones | Endocrine Glands | MedlinePlus
Jun 28, 2025 · Hormones are your body's chemical messengers. They affect many processes including mood. Too much or too little of a certain hormone can have health implications.
Hormones - Definition, Function, Sources, and Regulation
Oct 21, 2025 · Hormones are signaling molecules secreted by endocrine organs that regulate physiological processes in target cells. They control growth, development, metabolism, …
What Is a Hormone? - National Institute of General Medical ...
Jul 17, 2024 · Hormones are chemical messengers in the body that glands form and release, or secrete, into the bloodstream, where they travel to various organs and tissues to change …