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Sinoatrial Node
in right atrium
pacemaker of the heart
triggers the atria to contract and passes the impulse to the AV node
Atrievtricular Node
causes delay allowing the atria to empty blood and close bicuspid and tricuspid valve
Atrioventricular Bundle
in septum
aka bundle of his
sends impulse to bundle branches
right and left bundle branches
right bundle is right ventricle
left bundle is left ventricle
sends impulse to purkinje fibers
Purkinje fibers
spread in muscle tissue
carries impulse to ventricles and cause them to contract