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  1. Hormone - Wikipedia

    A hormone (from the Greek participle ὁρμῶν, "setting in motion") is a class of signaling molecules in multicellular organisms that are sent to distant organs or tissues by complex biological processes to regulate physiology and behavior. [1] Hormones are required for the normal development of animals, plants and fungi. Due to the broad ...

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

    Feb 23, 2022 · Hormones are chemical messengers that coordinate different functions in your body. Several glands, organs and tissues make and release hormones, many of which make up your endocrine system. What are hormones?

  3. 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 by evoking responses from specific organs or tissues.

  4. 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, stress, and environmental factors. Consider the following hormones and their role in the workings of the endocrine system:

  5. Hormones | Endocrine Glands - MedlinePlus

    Jan 21, 2025 · Endocrine glands, which are special groups of cells, make hormones. The major endocrine glands are the pituitary, pineal, thymus, thyroid, adrenal glands, and pancreas. In addition, men produce hormones in their testes and women produce them in their ovaries. Hormones are powerful.

  6. What are hormones? Types and what they do - Medical News Today

    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 known as endocrinology....

  7. Endocrine System: What It Is, Function, Organs & Diseases

    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 signals tell your body what to do and when to do it. Hormones are essential for life and your health. What is the function of the endocrine system?

  8. Hormones and Endocrine Function

    Jan 24, 2022 · Hormones are are the body’s chemical messengers, sending signals into the bloodstream and tissues. Hormones work slowly, over time, and affect many different processes, including growth and development, metabolism – how your body gets energy from the foods you eat- sexual function, reproduction, and mood.

  9. Endocrine System: What Is It, Functions, Organs & Conditions - Healthline

    Dec 21, 2023 · The endocrine system helps regulate bodily functions through hormone secretion. Learn about the organs and hormones involved, as well as how they work.

  10. What Is a Hormone? - PMC - PubMed Central (PMC)

    A hormone was thus defined as a compound that is produced in a secretory tissue and transported in the blood circulatory system to target tissues, where they induce functional changes.

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