endocrine system part 1. endocrine system the endocrine system is the “other” control system...
Post on 20-Jan-2018
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Hormones A hormone is any signal molecule that enter the blood and attaches to a target cell’s receptors Two major types of hormones: Steroid hormones and nonsteroid hormones – Steroid hormones are made from cholesterol and include testosterone & estrogen – Most hormones are nonsteroid
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