HHP 3500 Lecture Notes - Lecture 18: Thyroid, Adrenal Medulla, Adrenal Gland
4 Oct 2016
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Document Summary
A pathway of communication throughout the body the utilizes hormones as intercellular messengers; facilitates communication through multiple control systems. Endocrine system overview: 4 main structural components involved: Endocrine gland/cells located throughout body manufacture hormones. While exocrine glands secrete hormones into ducts, then move them into different areas. Once they reach their destination, they can be released into the interstitial fluid, and then move to plasma volume. Once in plasma, they can travel throughout body to get to target cells (effectors: major endocrine glands: hypothalamus, pituitary, pineal, parathyroid, thyroid, thymus, adrenal, pancreas, kidney, ovaries, testis, hormonal control systems help to regulate: Homeostasis and the responses to physiological stress (body temp. hunger) Reproductive functions: responses of endocrine system are relatively slow but long lasting, a single gland can secrete more than one hormone (ex. Adrenal gland, secretes 30 different hormones in different regions of the structure: a hormone may be secreted by multiple glands/cells (ex.
