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Biology 30

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Term
Definition
Homeostasis    
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Exocrine Gland   Glands that release secretions through ducts into a body cavity outside the body  
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Endocrine Gland   ductless glands that release hormones directly into blood or lymph  
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Hormone   chemical messenger for endocrine system; regulates activities of organs/tissues  
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Negative Feedback   High hormone concentration or its effects inhibit further production of the hormone. Prevents over secretion and promotes homeostasis.  
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Positive Feedback   High hormone concentration or its effects promote further production of the hormone  
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Tropic Hormone    
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Short-Term Stress Response    
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Fight-or-Flight Response    
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Long-Term Stress Response    
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Hypothalamus   Controls the autonomic nervous system with medulla oblongata. Regulates body temperature and intake of food and water. Influences reproductive physiology. Has specialized neural cells that produce/secrete hormones  
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Anterior Pituitary   Controlled by releasing hormones from hypothalamus. Synthesizes an releases 6 hormones that help control reproduction and growth and metabolism  
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Posterior Pituitary   Controlled by nerves from hypothalamus. Doesn't synthesize hormones. Instead stores and releases ADH and oxytocin profuced by hypothalamus. ADH and oxytocin are transferred to the posterior pituitary by neuronal axons.  
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Thyroid Gland   Increases metabolic rate. Lowers blood calcium levels  
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Parathyroid Gland   Specialized tissue on thyroid  
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Adrenal Gland    
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Pancreatic Islet Cells    
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Ovary    
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Testis    
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Type I Diabetes Mellitus    
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Type II Diabetes Mellitus    
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Diabetes Insipidus    
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Hyperglycemia    
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