Health10 M&n&o&p

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mutation

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myoo-TAY-shun): a change in a cell's genetic material. Once the genetic material has changed, the change is inherited by the offspring of that cell.

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myeloma:

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a cancer originating in the cells of the bone marrow.

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naproxen sodium

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(na-PROX-en): a drug that relieves fever, pain, and inflammation. It provides longer relief from a single dose than other com­mon pain relievers.

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narcotic antagonists:

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drugs that oppose the actions of other drugs. The word antagonist means something or someone who struggles with, or opposes, another.

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Narcotics Anonymous (NA

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free, self-help program of addiction recovery. It uses a 12-step program, promotes personal growth, and leads to the person's helping others to recover.

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narcotics:

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habit-forming drugs that relieve pain and produce sleep when taken in moderate doses. Also called opiates, because most are derived from the opium poppy.

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naturopathic medicine:

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: a mixture of traditional and alternative therapies.

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needs

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urgent wants for necessary things.

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nervous system

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the body system of nervous tissues-organized into the brain, spinal cord, and nerves-that send and receive messages and inte­grate the body's activities.

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neural (NER-uhl) tube defects

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: a group of birth defects caused by inter­ruption of normal development of the neural tube, the tissue from which the brain and spinal cord form. The term neural refers to nerve tissues

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. nicotine (

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(NICK-oh-teen): an addictive drug present in tobacco.

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night blindness:

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slow recovery of vision after flashes of bright light at night; an early symptom of vitamin A deficiency.

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nonconformist:

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person who does not share society's values and there­fore behaves in unconventional ways.

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nontraditional family:

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a group of unrelated people who live together and offer support to one another.

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norepinephrine:

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one of the stress hormones; also called noradrenaline

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nuclear family:

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a mother and father and their natural or adopted chil­dren

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nucleus: inside

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a cell, the structure that contains the genes.

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nutrient deficiencies

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(dee-FISH-en-sees): too little of one or more nutrients in the diet; a form of malnutrition

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nutrients:

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compounds in food that the body requires for proper growth, maintenance, and functioning.

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obesity:

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overfatness to the point of injuring health. Obesity is often defined as 20 percent or more above the appropriate weight for height

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opiates:

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a group of drugs derived from the opium poppy that relieve pain and induce sleep. Also known as narcotics.

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obsessive-compulsive disorder

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the uncontrollable need to perform repetitive acts.

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opium:

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a narcotic drug that relieves pain and induces sleep, made from the opium poppy.

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organs:

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whole units, made of tissues, that perform specific jobs.

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ostracism

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rejection and exclusion from society.

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ova

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the female cells of reproduction. Ova are also called eggs.

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over-the-counter

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OrC) drugs: drugs legally available without a pre­scription.

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overload:

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an extra physical demand placed on the body.

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overnutrition:

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too much food energy or excess nutrients to the degree of causing disease or increasing risk of disease; a form of malnutrition.

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. ovulation

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: the ripening and release of an ovum.

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ozone layer

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layer: a layer of ozone in the earth's outer atmosphere that pro­tects living things on earth from harmful ultraviolet radiation from the sun

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ozone:

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: a substance created when certain types of energy, such as the sun's ultra-violet rays, react with oxygen. When this reaction takes place high above the earth in the outer atmosphere, the ozone absorbs the most dan­gerous UV rays.

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pacemaker:

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a device that delivers electrical impulses to the heart to reg­

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Pap test:

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ulate the heartbeat.

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parasites:

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living things that depend for nourishment on the bodies of oth­ers that they inhabit.

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passive abuse:

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abuse involving not taking needed actions, such as neglecting to provide food or shelter to a dependent victim.

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passive:

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: possessing the characteristic of not expressing feelings appropri­ately, of remaining silent.

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PCP (phencyclidine hydrochloride):

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: a drug of abuse; an animal tranquilizer, abused by human beings as a hallucinogen.

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PCP (Pneumocystis carin;; pneumonia):

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the pneumonia character­istic of AIDS.

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pediatrician:

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: a specialist concerned with the health care of infants and children.

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peer pressure:

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peer groups: groups of people who are similar in age and stage of life.

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pelvic inflanunatory disease

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(PID): an infection of the fallopian tubes and pelvic cavity in women, causing ectopic pregnancy and pregnancy failures.

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perception:

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a meaning given to an event or occurrence based on a per­son's previous experience or understanding.

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persistent

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the opposite of biodegradable-unable to decompose or to be converted by living organisms into harmless wastes.

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personality:

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the characteristics of a person that are apparent to othet'

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phobia

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an extreme, irrational fear of an object or situation.

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photovoltaic

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(PV) panels: panels that convert light (photons) into electricity (

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peyote:

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: a cactus that produces the hallucinogen mescaline.

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pathogens:

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microbes that cause diseases.

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osteoporosis

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(OS-tee-oh-por-OH-sis): a disease of gradual bone loss, which can cripple people in later life