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Endocrine Word List

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Term
Definition
Addison disease   Chronic disorder of the adrenal glands caused by a deficiency of cortical hormones  
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Adenoma   Tumour of a gland  
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antidiuretic   Vasopressin: promotes reabsorption of water in teh kidneys  
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adrenal cortex   Outer section of the adrenal gland which secretes steriods  
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adrenalectomy   Surgical excision of an adrenal gland  
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adrenal glands   two bean-shaped glands situated on top of the kidneys which secrete steroids and sex hormones  
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adenal medulla   inner section of the adrenal gland which secretes epinephrine and norepinephrine.  
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aldosterone   Steroid produced in the adrenal cortex. Is essential to life. Maintains sodium and potassium levels.  
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atrophy   lack of development  
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cortisol   a glucocorticoid secreted by the adrenal cortex  
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Cushing syndrome   Disorder caused by hypersecretion of the adrenal cortex, resulting in excessive production of steroids.  
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diabetes mellitus   A common pancreatic disorder involving insulin secretion into the blood, either in too much or too little  
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dwarfism   a condition ob being abnormally small; may be hereditary or an endocrine dysfunction  
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endocrinology   the study of ductless glands, their secretions, and their function of homeostasis.  
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epinephrine   adrenaline - produced in the adrenal medulla. Increases heart reate, fat metabolism for energy, dilates the brochial tubes.  
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endocrine glands   glands that secrete hormones directly into the blood stream  
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exophthalmos   protusion of eyes due to swelling in tissues; often assocatied with Graves disease.  
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gigantism   abnormal overgrowth of the entire body caused by hypersecretion of pituitary growth hormone before puberty  
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glucogenesis   formation of glucose from glycogen  
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glucocorticoids   steriods in the adrenal cortex that influence the metabolism of fats, carbohydrates, and proteins.  
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glycogen   substance in which carbohydrates are stored in the liver for future conversion into sugar.  
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hyperglycemia   excessive amount of sugar in the blood  
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hyperinsulinism   excessive amount of insulin in the blood-insulin shock  
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hypersecretion   excessive secretion  
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hypocalcemia   abnormally low amount of calcium in the blood  
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hypoglycemia   too little sugar in the blood  
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hypogonadism   underdevelopment of internal secretions of male sex glands  
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hypokalemia   extreme depletion of potassium in the blood usually lost in diuresis  
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hyposecretion   inadequate secretion  
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islets of Langerhans   cluster of cells in the pancreas which produce insulin and glucagon  
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ketoacidosis   an acute stage of diabetes mellitus characterized by hypotension and, evntually coma  
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metabolism   processes in which substances are broken down or built up during chemical reactions taht are necesary to maintain life  
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mineralocorticoids   hormones in the adrenal cortex taht regulates water and mineral salts (electrolytes) in the body  
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norepinephrine   noradrenaline; produced in the adrenal medulla. increases blood pressure and constricts vessels  
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oral hypoglycemics   medications used to stimulate the pancreas to secrete insulin  
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pancreas   an organ that contains groups of cells called the islets of Langerhans which produce endocrine secretions, such as insulin and glucagon.  
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parathyroid glands   four separate glands taht are located on teh posterior surface of the lobes of the thyroid gland  
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pineal gland   pine-cone shaped gland that is attached to the posterior part of the third ventricle of the brain which secretes melatonin  
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pituitary gland   hypophysis; pea-shaped gland taht is located at the base of the brain  
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polydipsia   excessive thirst  
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polyphagia   a condition of eating abnormally large amounts of food  
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serum glucose tests   blood tests to aid in the diagnosis of insulin deficiency  
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somatotropin   human growth hormone found in the anterior pituitary lobe  
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thyroid echogram   ultrasound examination of the thyroid gland  
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thyroid gland   largest gland on teh endocrine system. located in the neck just below the larynx  
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thyrotoxic   thyroid poisoning  
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thyrotoxicosis   abnormal condition of poisoning of the thyroid gland  
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thyroxine (T4)   one of the two major hormones produced by the thyroid. REgulates metabolism and energy levels.  
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triiodothyronine (T3)   one of the two major hormones produced, stored and released by the thyroid gland.  
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