DAANCE Exam Questions and Answers Graded A+

DAANCE Exam Questions and Answers Graded A+ Wave of Depolarization an advancing wave of charge reversal as the nerve impulse advance a long the neuron Wakefullness system consists of a central core in the brainstem with neurons that radiate to the cortex Vomiting Center the center in the brainstem that induces vomiting Vital Centers centers in the brainstem that control such physiologic processes as blood pressure and pulse, depth and rate of respiration Vestibular nerve part of the eighth cranial nerve that is connect with equilibrium and hearing Venule any of the small vessels that collect blood from networks of capillaries and join them to form veins Ventricular tachycardia 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 Ventricular rhythms a cardia dsrhythmia in which the pacemaker is in the ventricles rather than in the SA node or atria Ventricular focus a displace point of origin for a dysrhythmia that is in the ventricles Ventricular fibrillation arrhythmia characterized by contractions of ventricle muscle fibers due to rapid excitation of myocardial fibers without coordinated contraction of the ventricle Sensory nerve a nerve of the peripheral nervous system that conducts impulses from a sense organ to the spinal cord or brain Sinoatrial node a microscopic collection of heart muscle fibers where cardiac rhythm originates; also called the pacemaker of the heart sinus arrhythmia a cardiac dysrhythmia similar to normal sinus rhythm, but withslight variation in rate with inspiration and expiration sinus bradycardia cardiac dysrhythmia similar to normal sinus rhythm except for a slower rate of less than 60 bpm sinus rhythms cardiac rhythms in which the pacemaker is the sinoatrial node sinus tachycardia dysrhythmia similar to normal sinus rhythm except for an increase in rate of greater than 100 bpm but less than 150 bpm stroke volume the amount of blood ejected from a ventricle during each beat of the heart subcutaneous beneath the skin superior vena cava 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 central points of origin of dsrhythmias, which are located above the level of the ventricles in the atria sympathommimetic having activity that mimics the effects of the sympathetic nervous system, epinephrine synapse the junction between two neurons where impulses are transmitted from one neuron to another synaptic cleft the gap between two nerves where the