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Conduction System

Conduction System of the Heart

QuestionAnswer
What are the two systems that regulate heart activity? Autonomous and Intrinsic Conduction (Nodal System)
This node is considered the "pacemaker of the heart." Sinoatrial (SA) node
This node starts each heartbeat and sets the pace. Sinoatrial (SA) node
This node is located in the right atrium. Sinatrial (SA) node
This node is located at the junction of the atria and ventricles. Atrioventricular (AV) node
The atrioventricular (AV) node is also known as __________. The Bundle of HIS
The intrinsic conduction system enforces a contraction rate at about ___ beats per minute. 75
Define cardiac cycle. Events of one complete heartbeat, where atria and ventricles contract and relax.
Define cardiac output. Amount of blood pumped out by each side of the heart in 1 minute.
Define lub. First sound caused by CLOSING of AV valves.
Define dup. Second heart sound heard when semilunar valves close at end of systole.
Created by: rad1958tech
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