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Acetylcholine
A neurotransmitter that allows a nerve impulse to cross the synaptic junction (gap) between two nerve fibers or between a nerve fiber and an organ ( e.g., muscle, gland) TERM 2
Acetylcholinesterase
DEFINITION 2 An enzyme that brings about the breakdown of acetylcholine in the synaptic gap. TERM 3
Analgesia
DEFINITION 3 loss of pain sensation ( other sensation may be present). TERM 4
Anesthesia
DEFINITION 4 the loss of all sensation. May be described as local ( affecting a small area), regional, or surgical (accompanied by unconsciousness). TERM 5
Autonomic Nervous System
DEFINITION 5 That portion of the nervous system that controls involuntary activities.
Catalepsy
A state of involuntary muscle rigidity that is accompanied by immobility, amnesia, and variable amounts of analgesia. Some reflexes may be preserved. TERM 7
Catecholamine
DEFINITION 7 The class of neurotransmitters that includes dopamine, epinephrine, and norepinephrine. When given therapeutically, catecholamines mimic the effects of stimulating the sympathetic nervous system. TERM 8
Cholinergic
DEFINITION 8 A term used to describe an action or receptor that is activated by acetylcholine. TERM 9
Effector
DEFINITION 9 A gland, organ , or tissue that responds to nerve stimulation with a specific action. TERM 10
Ganglionic Synapse
DEFINITION 10 The site of the synapse be tween neuron one and neuron two of the autonomic nervous system.
Sympathomimetic
a drug that mimics the effects of stimulation the sympathetic nervous system. TERM 17
Aerosolization
DEFINITION 17 the conversion of a liquid into a fine mist or colloidal suspension in air. TERM 18
Antitussive
DEFINITION 18 a drug that inhibits or suppresses the cough reflex. TERM 19
Bronchoconstriction
DEFINITION 19 widening lumen of bronchi and bronchioles, which results in increased airway resistance and decreased airflow. TERM 20
Bronchodilation
DEFINITION 20 widening lumen of bronchi and bronchioles, which results from relaxation of smooth muscle in the walls of the bronchi and bronchioles. Airway resistance is decreased, and airflow resistance is decreased, and airflow increased.
Decongestatnt
A substance that reduces the swelling of mucous membranes. TERM 22
Expectorant
DEFINITION 22 A drug that enhances the expulsion of secretions from the respiratory tract. TERM 23
Humidification
DEFINITION 23 Addition of moisture to the air. TERM 24
IGA
DEFINITION 24 Class of antibody produced on mucous membrane surfaces, such as those of the respiratory tract. TERM 25
Inspissated
DEFINITION 25 thickened or dried out
Surfactant
A mixture of phospholipids secreted by type II alveolar cells that reduce surface tension in pulmonary fluids. TERM 32
Vidvid
DEFINITION 32 sticky TERM 33
Afterload
DEFINITION 33 the resistance (pressure) in arteries that must be overcome to empty blood from the ventricle. TERM 34
Arrhythmia (Dysrhythmia)
DEFINITION 34 A variation from the normal rhythm. TERM 35
Automaticity
DEFINITION 35 the ability of cardiac muscle to generate impulses.
bradyarrhythmia
bradycardia associated with an irregularity of heart rhythm. TERM 37
Bradycardia
DEFINITION 37 a slower-than-normal heart rate. TERM 38
Chronotropic
DEFINITION 38 affecting the heart rate TERM 39
Depolarization
DEFINITION 39 neutralizing of the polarity of a cardiac cell by an inflow of sodium ions. depolarization results in contraction of the cardiac cell and renders it incapable of further contraction until re polarization occurs. TERM 40
Inotropic
DEFINITION 40 affecting the force of cardiac muscle contraction.
tachycardia
a faster-than-normal heart rate. TERM 47
Neuron
DEFINITION 47 transmit info from point to point TERM 48
Reflex arc
DEFINITION 48 most basic impulse conduction system TERM 49
cerebrum
DEFINITION 49 responsible for higher function ( learning, memory, & interoperation) TERM 50
Thalamus
DEFINITION 50 relay center for sensory impulses form SC, brain stem, & cerebellum to the cerebrum
Hypothalamus
primary mediator between nervous system & endocrine system TERM 52
Medulla
DEFINITION 52 carries both sensory & motor impulse between SC & brain also contains center that control vital physiologic activities. TERM 53
Reticular Formation
DEFINITION 53 network of nerve cells scattered through bundles of fibers begin in medulla & extend upward through the brain fxn to arouse the cerebral cortex & is responsible for consciousness, sleep, & wakefulness TERM 54
Nasal cavity
DEFINITION 54 warm and humidify air, hair to filter out large particles TERM 55
Protective reflexes
DEFINITION 55 cough, sneeze and reverse sneeze-respnse to stimuli on surfaces of air passages, forcefully expel foreign material
Budile of His
goes to the left and right branches and into the ventricular fibers TERM 62
beta-
DEFINITION 62 receptors which produce positive chronotropic and inotropic effects on the heart. TERM 63
Compensation Mechanisms
DEFINITION 63 allows heart to increase output in times of need and compensate for cardiac dz
