Chapter 1 - Vital Vocabulary Flashcards
Absorption Stage
The stage when a drug enters the body and reaches the bloodstream
Active Transport
There are two general methods by which drugs cross the cell membrane: by active or passive transport. Active transport moves via pumps that require energy and move the drug from an area of low concentration to an area of high concentration.
Additive Effect
When two drugs work together to produce an effect a single drug would not produce. This is also referred to as summation.
Adrenergic
Pertaining to nerves that release the neurotransmitter norepinephrine or noradrenaline (such as adrenergic nerves, adrenergic response). The term also pertains to the receptors acted on by norepinephrine, that is, the adrenergic receptors.
Adverse Reaction
An undesirable response to a drug that may be sudden or take days to occur.
Afferent Nerves
The nerves that carry sensory impulses from all parts of the body to the brain.
Agonist
The substance that mimics the actions of a specific neurotransmitter or hormone by binding to the specific receptor of the naturally occurring substance.
Analgesics
A classification for medications that relieve pain, or induce analgesia.
Anesthetics
A type of medication intended to induce a loss of sensation to touch or pain.
Antagonist
When one drug prevents or reverses the reaction of another. This may be chemical, competitive, or physiologic.
Antibiotics
The medications that fight bacterial infection by killing the bacteria or by preventing multiplication of the bacteria to allow the body’s immune system to overcome them.
Anticholinergic
Of or pertaining to the blocking of acetylcholine receptors, resulting in inhibition of transmission of parasympathetic nerve impulses.
Anticoagulants
The medications used to prevent intravascular thrombosis by preventing blood coagulation in the vascular system.
Anticonvulsants
The medications used to treat seizures, which are believed to work by inhibiting the influx of sodium into cells.
Antihyperlipidemics
Medications that help to lower cholesterol
Antihypertensives
The medications used to control blood pressure.