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absolute refractory period
The early phase of cardiac repolarization, wherein the heart muscle
cannot be stimulated to depolarize: also known as the effective
refractory period.
absorption
The process by which the molecules of a substance are moved from the
site of entry or administration into systemic circulation.
acetylcholinesterase
An enzyme that breaks down acetylcholine.
active metabolite
A medication that has undergone biotransformation and is able to alter a
cellular process or body function.
active transport
The process of molecules binding with carrier proteins when energy is
used to move the molecules against a concentration gradient
adverse effect
Abnormal or harmful effect to an organism caused by exposure to a
chemical. It is indicated by some result such as death, a change in food
or water consumption, altered body and organ weights, altered enzyme
levels, or visible illness
affinity
,The ability of a medication to bind with a particular receptor site.
agonist medications
Turns on:
group of medications that initiates or alters a cellular activity by attaching
to receptor sites, prompting a cellular response
analgesia
The state of being insensible to pain while still conscious.
anaphylaxis
An extreme systemic form of an allergic reaction involving two or more
body systems.
anesthetic
An extreme systemic form of an allergic reaction involving two or more
body systems.
anesthetic
A medication that causes the inability to feel sensation.
antagonist medications
Blocks:
group of medications that prevent endogenous or exogenous agonist
chemicals from reaching cell receptor sites and initiating or altering a
particular cellular activity
Special classes of drugs
Age
Pregnancy
, Age effects drugs how
Administration
Distribution
Changes
antibiotics
particular The medications used to fight infection by killing the
microorganisms or preventing their multiplication to allow the body's
immune system to overcome them.
antifungals
The medications used to treat fungal infections
antimicrobials
The medications used to kill or suppies the growth of microorganisms.
automaticity
A state in which cardiac cells are a rest waiting for the generation
impulse from within
bioavailability
The percentage of the unchanged medication that reaches systemic
circulation
bronchoconstriction
Narrowing of the bronchial tubes
bronchodilation