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The Endocrine System SBI4U Lesson Outline • The Endocrine System • Types of Hormones • Hormone Mechanisms • Endocrine Feedback Mechanisms The Endocrine system Regulates and coordinates the functions of organs throughout the body. Contributes to the control of: • Growth • • • • • • Development Reproduction Behavior Energy Metabolism Water Balance Types of Hormones Protein Hormones are composed of chains of amino acids that are water soluble, they usually act on cell membrane receptors Steroid Hormones are composed of cholesterol That is not very water soluble. They usually pass through the cell membrane and act on Receptors inside the cell Hormone Mechanisms Endocrine Feedback Mechanisms Conclusion/Moving Froward Monday Sex Hormones Practice Questions p. 472 #3,4,9,10, p.482 #1,2,5,11,12, p.487 #1,3, p. 493 #2,5,7,9, and p. 503 #2,6,7,11