DAANCE Exam Questions And Answers
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Wave of Depolarization - Answer✔an advancing wave of charge reversal as the nerve impulse
advance a long the neuron
Wakefullness system - Answer✔consists of a central core in the brainstem with neurons that
radiate to the cortex
Vomiting Center - Answer✔the center in the brainstem that induces vomiting
Vital Centers - Answer✔centers in the brainstem that control such physiologic processes as
blood pressure and pulse, depth and rate of respiration
Vestibular nerve - Answer✔part of the eighth cranial nerve that is connect with equilibrium and
hearing
Venule - Answer✔any of the small vessels that collect blood from networks of capillaries and
join them to form veins
Ventricular tachycardia - Answer✔a cardia dsrhythmia in which there is rapid firing of an
ectopic focus in the ventricles and a wide QRS complex with no p waves
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Ventricular rhythms - Answer✔a cardia dsrhythmia in which the pacemaker is in the ventricles
rather than in the SA node or atria
Ventricular focus - Answer✔a displace point of origin for a dysrhythmia that is in the ventricles
Ventricular fibrillation - Answer✔arrhythmia characterized by contractions of ventricle muscle
fibers due to rapid excitation of myocardial fibers without coordinated contraction of the
ventricle
Sensory nerve - Answer✔a nerve of the peripheral nervous system that conducts impulses from
a sense organ to the spinal cord or brain
Sinoatrial node - Answer✔a microscopic collection of heart muscle fibers where cardiac rhythm
originates; also called the pacemaker of the heart
sinus arrhythmia - Answer✔a cardiac dysrhythmia similar to normal sinus rhythm, but
withslight variation in rate with inspiration and expiration
sinus bradycardia - Answer✔cardiac dysrhythmia similar to normal sinus rhythm except for a
slower rate of less than 60 bpm
sinus rhythms - Answer✔cardiac rhythms in which the pacemaker is the sinoatrial node
sinus tachycardia - Answer✔dysrhythmia similar to normal sinus rhythm except for an increase
in rate of greater than 100 bpm but less than 150 bpm
stroke volume - Answer✔the amount of blood ejected from a ventricle during each beat of the
heart
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subcutaneous - Answer✔beneath the skin
superior vena cava - Answer✔the venous trunk that drains blood from the head, neck, upper
extremities, and chest and empties into the right atrium of the heart
supraventricular foci - Answer✔central points of origin of dsrhythmias, which are located above
the level of the ventricles in the atria
sympathommimetic - Answer✔having activity that mimics the effects of the sympathetic
nervous system, epinephrine
synapse - Answer✔the junction between two neurons where impulses are transmitted from
one neuron to another
synaptic cleft - Answer✔the gap between two nerves where they meet at a synapse
syncope - Answer✔fainting
synergistic - Answer✔the phenomenon that exists when two drugs are administered together,
and the combined effect is greater than the sum of its parts
systolic - Answer✔pertaining to the phase of the heart's pumping action when the ventricles
contract, forcing blood either to the lungs or peripheral circulation
T wave - Answer✔the EKG waveform that represents repolarization of the ventricles
Tachycardia - Answer✔fast heart rate
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