HE201 Study Guide - Final Guide: Thyroid, Endocrine System, Circulatory System
Document Summary
For long-distance communication, the body utilizes the slow endocrine system, which releases hormones, and the fast- nervous system, which releases nt. Consists of glands or groups of cells that secrete hormones and/or the target cells responsive to them. Hormones: chemicals released from endocrine glands into the interstitial fluids, where they can then diffuse into the blood: hormone that travels in the blood to its target, can be distant from the site of hormone release. The blood stream distributes the hormone to almost all cells of the body, only cells possessing receptors specific for the hormone can respond, and thus serve as its target cells. Endocrine: communicator: hormones; communicate via: bloodstream; communicate to: most cell types. Nervous system: communicator: neurotransmitters; communicate via: synapse; communicate to: neurons, muscle, glands. Endocrine system regulates: metabolism, growth and development, reproduction, responses to stress, and water and electrolyte balance. Endocrine system modulates (regulates): digestive and circulatory system.
