About 223,000 results
Open links in new tab
  1. 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 …

  2. Hormones: What They Are, Function & Types - Cleveland Clinic

    Hormones are chemicals that coordinate different functions in your body by carrying messages through your blood to your organs, skin, muscles and other tissues.

  3. HORMONE Definition & Meaning - Merriam-Webster

    : a product of living cells that circulates in body fluids (as blood) or sap and produces a specific and often stimulating effect on cells usually at a distance from the place where it is made.

  4. 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 …

  5. Hormone | Definition, Function, & Types | Britannica

    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 out their functions …

  6. 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.

  7. Hormones - Definition, Function, Sources, and Regulation

    Oct 21, 2025 · Hormones are chemical messengers that coordinate and regulate vital processes in animals and plants. Produced by specialized cells in endocrine glands or tissues, hormones …

  8. HORMONE Definition & Meaning | Dictionary.com

    HORMONE definition: any of various internally secreted compounds, as insulin or thyroxine, formed in endocrine glands, that affect the functions of specifically receptive organs or tissues …

  9. Hormones Definition - Anatomy and Physiology I Key Term

    Hormones are chemical messengers produced by the endocrine system that regulate and coordinate various physiological processes in the body. They play a crucial role in maintaining …

  10. What are hormones? Types, functions, and imbalances

    Jun 26, 2024 · Hormones are chemical messengers that send a signal to one or more tissues or organs in the body. They are part of the endocrine system, and the study of this system is …

    Missing:
    • definition
    Must include: