chapter 13 copy - Anita Badro SCI101 Chapter 13 Endocrine...

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Anita Badro SCI101 Chapter 13 Endocrine System 13.1General Characteristics of the Endocrine System 1. Contrast the definitions of endocrine gland and exocrine gland. Endocrine glands secrete substances into the internal environment. Exocrine gland secretions are released externally. 2. Explain the specificity of a hormone for its target cell. A hormone is a secreted biochemical that affects the functions of another cell. A target cell is a cell that possesses specific receptors for a particular hormone. Thus, a hormone affects only its specific target cell. 3. List six general functions of hormones. 1. Help regulate metabolic processes. 2. Control rates of certain chemical reactions. 3. Aid in transporting substances through membranes. 4. Help regulate water balance and electrolyte balance. 5. Role in reproduction, development, and growth. 6. Help regulate blood pressure. 13.2Hormone Action 4. Explain how hormones can be grouped on the basis of their chemical composition. Hormones can be grouped into five separate categories: Steroid—Steroids are lipids that are made of complex rings of carbon and hydrogen. They differ
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