HSCI 100 Lecture 12: HSCI 100
2 Dec 2016
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Document Summary
Mostly comprised of glands that contain secretory cells that release their products, called hormones into extracellular fluid where they diffuse into the bloodstream. Hormones are one type of chemical messenger of the body. Secretes hormones that move primarily through the bloodstream to target cells. Results in a slow but a prolonged response as opposed to the virtually instantaneous responses of the nervous system. The nervous and endocrine system are important in maintaining homeostasis by: The hypothalamus bridges regulatory functions of both systems. The nervous system is able to respond to changes in the external environment. The information may result in rapid responses (nervous system) or more prolonged and stable responses (endocrine system) Exocrine glands secrete their products into ducts that carry these products to other organs or outside the body. Endocrine glands secrete their products directly into the bloodstream. Hormones are chemical signals that promotes communication between cells, body parts, and even individuals.
