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kinn's Chapter 49
Term | Definition |
---|---|
atria | The two upper chambers of the heart. |
atrioventricular (AV) node | The part of the cardiac conduction system between the atria and the ventricles. |
bundle of His | Specialized muscle fibers that conduct electrical impulses from the AV node to the ventricular myocardium. |
cardiac arrest | A condition in which cardiac contractions stop completely. |
cardioversion | The use of electroshock to convert an abnormal cardiac rhythm to a normal one. |
defibrillator | A machine that delivers an electroshock to the heart through electrodes placed on the chest wall. |
ectopic | Originating outside of the normal tissue. |
infarction | An area of tissue that has died from lack of blood supply. |
ischemia | Decreased blood flow to a body part or organ, caused by constriction or blockage of the supplying artery. |
myocardial | Pertaining to the heart muscle. |
sinoatrial (SA) node | The pacemaker of the heart; it is located in the right atrium. |
ventricles | The two lower chambers of the heart. |