Card Set Information
Electrocardiogram: assess the hearts ability to conduct impulses. Recording of the electrical changes in the myocardum during a cardiac cycle.
P Waves: first deflection: corresponding to a depolarization of the atrial fibers that lead to contractions of the atria.
T Waves: process when deflection reoccurs ending the ECG pattern
QRS complex: Rapid depolarization occurs electrical change is greater, leaving the deflection greater.
Pq intervals: Period between beginning of P wave and beginning of QRS complex
Vagus Nerve: continually carries impluses to SA and AV nodes. Parasympathetic fibers that increase and decrease heart rate.
Accelerator Nerves: Cardic Sympathetic nerves, when stimulated accelerate the action of the heart.
Barorecptor Relex: relfex arise from the cardiac control center.
Cardiac Control Center: Maintains balance between inhibitory effects of the parasympathetic fibers and the excitatory effects of sympathetic fibers.
Cardio Accelerator Reflex: Heart rate and force of constriction increase and venous pressure is reduced.
Cardio Inhibitory Reflex: the center in the brain that receives sensory impulses from the cardiovascular system and relays impulses to the heart in response