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42 Cards in this Set

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  • Back
food chain:
n: the sequence in which living things depend on other living things for food. Algae are near the bottom and human beings at the top of the food chain.
: a substance related to alcohol. Formaldehyde is made by the body from alcohol and contributes to hangovers.
fossil fuel:
coal, oil, and natural gas, which all come from the fossilized remains of plant life of earlier times.
foster family:
a family formed when a government agency places a child in the temporary care of an adult or couple. The child's own parents may have died or for some reason cannot care for the child.
a plant that contains a substance used in the heart medicine digoxin
a break in a bone. An open fracture is a break with a wound in the overlying tissues. A closed fracture is a break or crack with no visible wound.
free radicals:
: chemicals that harm the body's tissues by starting destruc­tive chain reactions in the molecules of the body's cells. Such reactions are believed to trigger or worsen some diseases.
the number of activity units per unit of time (for example, the number of exercise sessions per week).
the formation of ice crystals in body parts exposed to tempera­tures below freezing; freezing of body parts, especially toes and fingers, and nose and other face parts.
living things that absorb and use nutrients of organisms they invade. Fungi that cause illnesses include yeasts and molds.
peer groups that exist largely to express aggression against other groups.
a drug whose abuse is likely to lead to abuse of other, more potent and dangerous drugs. Alcohol, marijuana, and tobacco are most often named as gateway drugs.
gender identity:
that part of a person's self-image that is determined by the person's gender.
gender roles
roles assigned by society to people of each gender.
the classification of being male or female.
generic (jeh-NEHR-ick)
the chemical names for drugs, as opposed to the brand names; the names everyone can use.
genes (JEENZ
the units of a cell's inheritance, which direct the making of equipment to do the cell's work.
genetic counselor:
: an advisor who predicts and advises on the likeli­hood that congenital defects will occur in a family.
genetic engineering:
a science of manipulating the genes of living things to instill some desirable trait not present in the original organism. An example is a tomato given a gene to delay its rotting.
genital herpes (HER-peez):
: a common, incurable sexually transmitted disease caused by a virus that produces blisters. The symptoms clear up on their own, but the virus remains to cause future outbreaks.
genital warts:
contagious wartlike growths on infected areas, caused by human papilloma viruses. Sometimes called condyloma (con-di-LOW-ma). The viruses that cause genital warts can also cause cervical cancer in women.
ginseng (JIN-seng):
a plant containing chemicals that have drug effects.
ginseng abuse syndrome:
a group of symptoms associated with the overuse of ginseng, including high blood pressure, insomnia, nervousness, confusion, and depression.
an organ of the body that secretes one or more hormones. global warming: warming of the planet, a trend that threatens life on earth.
the body's blood sugar; a simple form of carbohydrate. glycogen: the form in which the liver and muscles store glucose
gonorrhea (gon-oh-REE-uh):
: a bacterial sexually transmitted disease that often advances without symptoms to spread though the body, causing problems in many organs.
grams (abbreviated g):
: units of weight in which many nutrients are mea­sured; 28 grams equals 1 ounce.
greenhouse effect:
the heat-trapping effect of the glass in a greenhouse. The same effect is caused by gases that are accumulating in the earth's outer atmosphere, which are trapping the sun's heat and warming the planet.
to feel keen emotional pain and suffering over a loss.
the normal feeling that arises from the conscience when a person acts against internal values ("I did a bad thing").
gum disease:
inflammation and degeneration of the pink tissue (gums) that is attached to the teeth and helps to hold them in place.
: a specialist in the care of the female reproductive system.
false perceptions; imagined sights, sounds, smells, or other feelings, sometimes brought on by drug abuse, sometimes by mental or physical illness.
hallucinogens (hal-LOO-sin-oh-jens
: drugs that cause visions and other sensory illusions.
head lice:
tiny, but visible, white parasitic insects that burrow into the skin or hairy body areas.
head restraints:
high seatbacks or other devices attached to seats in cars at head level. A head restraint prevents the person's head from snapping back too far when the body is thrown backward. This prevents neck and spinal cord injuries.
a range of states with physical, mental, emotional, spiritual, and social components. At a minimum, health means freedom from physical disease, poor physical condition, social maladjustment, and other negative states. At a maximum, health means "wellness."
health-care system:
the total of all health-care providers and medical treat­ment facilities that work together to provide medical care to the population. health maintenance organization (HMO): a group of physicians who practice together and who treat people's health problems under a pre­payment plan.
heart attack:
the event in which vessels that feed the heart muscle become blocked, causing tissue death.
heart disease:
any disease of the heart muscle or other working parts of the heart.
heart murmur:
: a heart sound that reflects damaged or abnormal heart valves
heart transplant:
the surgical replacement of a diseased heart with a healthy one.