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17 Cards in this Set

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One half, or 50% of college students
smoke between 1 and 10 cigarettes per day (while 12% smoke one or more packs of cigarettes a day).
DRUG
a single chemical substance in a medicine that alters the structure or function of some of the body's biological processes. (The alteration can start, stop, speed up or slow down a biological process).
MEDICINE (4 roles)
A DRUG (or combonation of drugs) that is intended to (1) prevent illness, (2) cure disease, (3) aid healing, (4) suppress symptoms.
How are DRUGS classified?
Drugs are usually classified according to the particular biological proces they affect rather than by their chemical properties.
How do DRUGS work?
By binding to RECEPTORS on the surface of, or within, specific celss in the body.
RECEPTOR
Protein on the surface or incide a cell to which a drug or natural substance can bind and thereby affect cell function
SIDE EFFECTS
unintended and often harmful actions of a drug
DRUG HYPERSENSITIVITY
an alergic reaction to a drug
TERATOGEN
a drug that alters the development of a fetus, causing birth defects
CONTRAINDICATION
any medical reason for not taking a particular drug
Number of Americans that die each year from MEDICATION ERRORS:
7,000
Ways drugs can be administered:
taken by mouth, inhalation, injection into the muscles, under the skin, or directly into the bloodstream (IV), or absorbtion through the skin, and mucous membranes of the nose, eyes, vagina, and anus.
DOSE
amount of drug that is administered
double-blind
neither the person receiving the drug nor the person administering the drug knows whether it is a placebo or the real drug
OTC
over-the-counter -- drugs that do not require a prescription
PSYCHOACTIVE
DRUGS that alter thoughts, feelings, and sensations (e.g. tranquilizers, sleeping pills, and mood modifiers).
Four characteristics of ADDICTION
Loss of control
Continued drug use despite Adverse consequences
Compulsion
Distortions in normal thinking