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The Endocrine System Vocab

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Term
Definition or Function
Endocrine Glands   produce and release chemicals directly into the bloodstream  
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Hormones   chemical product of endocrine glands; turn on/off, speed up/slow down activities of organs and tissues  
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Target Cells   cells that recognize a specific hormone's chemical structure  
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Hypothalamus   small part of brain that is a link between the nervous system and the endocrine system  
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Pituitary Gland   small endocrine gland just below the hypothalumus that communicates with the hypothalamus to control many body activities  
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Negative Feedback   important way that body maintains homeostasis: when amount of a certain hormone in the blood reaches a certain level, endocrine system sends signals to stop releasing that hormone  
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Thyroid Gland   controls rate at which body produces energy from nutrients  
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Parathyroid Gland   controls level of calcium in blood  
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Adrenal Glands   secrete hormones directly into bloodstream  
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Thymus   part of immune system in the upper part of chest  
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Pancreas   near the stomach; breaks down fats, proteins, and carbs  
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Ovaries   glands to either side of uterus; produce eggs (ova) and estrogen  
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Testes   two testicles; produce sperm  
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