Co-ordination of the Cardiac Cycle 0.0 / 5 ? BiologyExchange and TransportASOCR Created by: Maisie GulCreated on: 06-10-16 12:52 Bradycardia A slow heart rhythm 1 of 8 Ectopic heartbeat an extra heart beat or early beat of the ventricles 2 of 8 Electrocardiogram A trace that records the electrical activity of the heart 3 of 8 Fibrillation Uncoordinated contraction of the atria and ventricles 4 of 8 Myogenic muscle Muscle that can initiate its own contractions 5 of 8 Purkyne tissue Consists of specially adapted muscle fibres that conduct the wave of excitation from the AVN down the septum to the ventricles 6 of 8 Sino-Atrial Node (SAN) The heart's pacemaker: small patch of tissue that sends out waves of electrical excitation at regular intervals in order to initiate contractions 7 of 8 Tachycardia A rapid heart rhythm 8 of 8
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