Plant that are obtainable only by prescription and

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plant that are obtainable only by prescription and are used to relieve pain (Ch. 23, 608) Neglect Failure to provide for a child’s physical or emotional needs (Ch. 11, 288) Negotiation The use of communication and often compromise to settle a disagreement (Ch. 10, 266) Nephrons The functional units of the kidneys (Ch. 17, 454) Neurons Nerve cells (Ch. 15, 400) Nicotine The addictive drug found in tobacco leaves (Ch. 21, 541) Nicotine substitute A product that delivers small amounts of nicotine into the user’s system while he or she is trying to give up the tobacco habit (Ch. 21, 549) Nicotine withdrawal The process that occurs in the body when nicotine, an addictive drug, is no longer used (Ch. 21, 548) Noise pollution Harmful and unwanted sound of sufficient intensity to damage hearing (Ch. 29, 770) Noncommunicable disease A disease that is not transmitted by another person, a vector, or from the environment (Ch. 26, 674) Nutrient-dense foods Foods that are high in nutrients as compared with their calorie content (Ch. 6, 148) Nutrients Substances in food that your body needs to grow, to repair itself, and to supply you with energy (Ch. 5, 110) Nutrition The process by which the body takes in and uses food (Ch. 5, 110) O Obesity Having an excess amount of body fat (Ch. 6, 146) Occupational Safety and Health Administration (OSHA) The agency in the federal government that is responsible for promoting safe and health- ful conditions in the workplace (Ch. 27, 713) Online shopping Using the Internet to buy products and services (Ch. 3, 52) Opportunistic infection An infection that occurs in an individual who does not have a healthy immune system (Ch. 25, 659) Ossification The process by which bone is formed, renewed, and repaired (Ch. 15, 387) Osteoarthritis A disease of the joints in which cartilage breaks down (Ch. 26, 693) Osteoporosis A condition in which there is the pro- gressive loss of bone tissue (Ch., 4, 78; Ch. 15, 391) Ova Female reproductive cells (Ch. 18, 474) Ovaries The female sex glands that store the ova and produce female sex hormones (Ch. 18, 474) HEALTH_2004_BACKMATTER_2_TX 1/8/04 2:15 PM Page 799
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800 Glossary Overdose A strong, sometimes fatal reaction to taking a large amount of a drug (Ch. 23, 594) Overexertion Overworking the body (Ch. 4, 99) Overload Working the body harder than it is normally worked (Ch. 4, 90) Over-the-counter (OTC) medicines Medicines that you can buy without a prescription (Ch. 23, 590) Overweight A condition in which a person is heavier than the standard weight range for his or her height (Ch. 6, 146) Ovulation The process of releasing a mature ovum into the fallopian tube each month (Ch. 18, 474) P Pancreas Gland that serves two systems—the digestive and the endocrine systems (Ch. 18, 465) Pandemic A global outbreak of infectious disease (Ch. 25, 665) Paranoia Irrational suspiciousness or distrust of others (Ch. 23, 600) Parathyroid glands Glands that produce a hormone that regulates the body’s calcium and phosphorus balance (Ch. 18, 465) Passive A tendency to give up, give in, or back down without standing up for rights and needs (Ch. 12, 312) Passive immunity Temporary immunity received from another person or from antibodies (Ch. 24, 631)
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