Addison's Disease - Answers A disease due to hyposecretion of glucocorticoids, characterized by low
blood pressure, anemia, diarrhea, digestive disturbance, and a bronzelike pigmentation of the skin.
Adjunctive agents - Answers Agents that supplement the primary anestetic agent to augment or
enhance the effects of the primary agent.
Allergenicity - Answers Having the property of an allergen, a substance that will elicit an allergic
response in sensitive individuals.
Alveolus (plural is alveoli) - Answers A small air sac within the body of the lung.
Amide - Answers A chemical structure derived from ammonia; there is a group of amide local
anesthetics that are widely used in dentistry (eg. lidocaine, mepivacaine, prilocaine, bupivacaine).
Amnesia - Answers Failure to remember events related to surgery.
Analgesia - Answers Insensitivity to pain.
Anaphylaxis - Answers A severe allergic reaction marked by any of several severe responses, including
skin reactions, smooth muscle cramping, urinary incontinence, constriction of bronchioles, respiratory
difficulty, and cardiovascular collapse.
anemia - Answers A reduction in the number of red blood cells in the bloodstream.
Angina pectoris - Answers Pain in the chest, with a feeling of suffocation, usually due to a deficiency of
blood supply to the myocardium.
Antecubital - Answers Situated in front of the elbow.
Antecubital fossa - Answers The depression between the forearm and the upper arm that is literally "in
front of the elbow."
Anticholinergic - Answers A drug that counteracts the action of acetylcholine, the neurotransmitter of
the parasimpathetic nervous system and thereby blocks the action of the parasympathectic nerves.
Antiemetic - Answers A drug that counteracts nausea and vomiting.
Antisialagogue - Answers A drug that counteracts the production of saliva.
Anxiolytics - Answers Drugs that reduce anxiety, agiation, or tension [eg. diazepam (Valium), midazolam
(Versed)].
Aorta - Answers The main trunk ( a very large artery) from which the arterial system proceeds.
Apnea - Answers Absence or cessation of breathing.
, Arrest rhythms - Answers Cardiac rhythms in which there is cardiac arrest. Some arrest rhythms such as
pulseless ventricular tachycardia are accompanied by a rhythm display, but there is no contraction.
Arrhythmia - Answers Any variation from the normal rhythm of the heartbeat.
Arteriole - Answers Any of the very small arterial branches located at the end of an artery (furthest from
the heart).
Artery - Answers A vessel that carries blood away from the heart to other parts of the body.
Ascites - Answers Accumulation of seous fluid in the abdominal cavity.
Asystole - Answers Cardiac arrest in which there is no rhythm display and no contractions.
Ataractics - Answers Pharmacologic agents that produce a tranquilizing effect.
Atherosclerosis - Answers A disease of the arteris characterized by the deposition of plaques of fatty
material on their inner walls.
Atrial Fibrillation - Answers Atrial arrhythmia characterized by rapid randomized contractions of the
atrial mycordium, causing a totally irregular and often rapid ventricular rate.
Atrial flutter - Answers a condition of cardiac arrythmia in which the atrial contractions are rapid (200 to
320 per minute) but regular.
Atrial (supraventricular) rhythms - Answers Dysrhythmias in which the pacemaker is in the atria above
the level of the ventricles (supraventricular) area.
Atrial tachycardia - Answers Rapid heartbeat originating from the atria.
Atrioventricular block (AV block /Heart block) - Answers A cardiac conduction defect in which the
implulse generated by the SA node is partially or completely blocked in the area of the AV node.
Atrioventricular node - Answers A microscopic collection of heart muscle fibers involved in the electrical
activity of the heart.
Atrium (plural is atria) - Answers An upper chamber of the heart; atria also exist in other parts of the
body.
Automaticity - Answers The condition of being automatic.
Autonomic nervus system - Answers A portion of the nervous system concerned with requlation of the
activity of cardia muscle, smooth muscle, and glands.
Balanced anesthesia - Answers Anesthesia that relies on the use of several aganets together, capitalizing
on the best aspects of each agent, but using each at a smaller dose than would required if it were used
alone.