615, chapters 1-4 Study Guide
Solutions
early part of drug development - ANSWER✔✔-preclinical stage
phase one clinical trials - ANSWER✔✔-establish biological effects as well as safe
dosages and pharmacokinetics in a small number of healthy patients
phase two clinical trials - ANSWER✔✔-new drug used to treat disease in a small
number of patients and establish the potential of the drug to improve outcomes
phase three clinical trials - ANSWER✔✔-compare the new medication to standard
therapy
two types of drug responses - ANSWER✔✔-quantal and graded
guanine nucleotide regulatory proteins (G proteins) - ANSWER✔✔-seven regions of
protein span the cell membrane to create a pocket for drugs to bind
drugs can act on one of three types of receptor sites (agonists/full agonists, antagonists,
partial antagonists) unless they are - ANSWER✔✔-of a type that do not act through
receptors. i.e. general anesthetics, sodium bicarbonate
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, metabolism - ANSWER✔✔-changing one chemical into another
first step in WHO process to prescribe - ANSWER✔✔-develop an accurate diagnosis
three types of treatment goals with medications - ANSWER✔✔-curative, symptom
relieving, preventative
homeostasis - ANSWER✔✔-the tendency of a cell, tissue, or the body not to respond to
drugs but instead to maintain the internal environment by adjust physiological
processes..
effects of route of administration are dependent on what 4 factors? - ANSWER✔✔-
compliance, bioavailability, onset of action, duration of action
half-life - ANSWER✔✔-time over which the drug concentration will decrease by half.
drug interactions - ANSWER✔✔-there are a limited number of drug-metabolizing
enzymes, and these enzymes can metabolize only one drug molecule at a time.
excretion - ANSWER✔✔-process by which the drugs are transferred from inside the
body to outside the body
which organ is the primary organ of excretion for most drugs? - ANSWER✔✔-kidneys
As many as___ percent of patients do not take their medications as prescribed, or do not
take them at all - ANSWER✔✔-50%
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