Final Exam Word Scramble
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Term | Definition |
Systole | Heat muscles are contracting . |
Diastole | Heart muscles are at rest. |
Cardiac Output | Volume of blood into the aorta each minute by the heart. |
Ejection Fraction | Percentage of blood pumped out of a ventricle with each contraction. |
Myocardial Cells | Working mechanical cells |
Pacemaker Cells | Specialized cells for electrical conduction (automatic) |
Properties of Cardiac Cells | Automaticity Excitability Conductivity Contractility |
SA Node | Located: Top right atrium Function: "Pacemaker" |
AV Node & Bundle | Located: Floor (base) of right atrium Function: Impulses from atria to ventricles Secondary (40-60 beats) |
Right & Left Bundle Branches | Atrial ventricular spectum area (muscle) Less than 20 beats |
Purkinje Fibers | Located: Lower apex Function: Receive impulses |
Leads | Record of electrical activity between 2 electrons |
Electrodes | "Pads" applied on body |
P Wave | Atrial Depolarization (Contracting) |
QRS Complex | Ventricular Depolarization |
T | Ventricular Repolarization |
Dysrhythmia | Abnormal heart rhythms |
SR | Sinus Rhythm 60-100 beats= normal heart rate |
Normal HR | 60-100 |
Tachycardia | 101-180 beast Fast Rate |
Bradycardia | Less than 60 beat Slow Rate |
Sinus Arrhythmia | Irregular rate |
Premature Complexes | Beat before |
What Causes Atrial Dysrhythmias? | |
Junctional Rhythm | Occur in AV Junction (no pwave) |
PEA | Pulse Electrical Activity |
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