CSEP CEP Material questions with correct answers

Autorythmic - Answer Self Exciteable, and repeatedly generate action potential eg. natural pace maker Cause of fundamental heart rhythm - Answer NOT by nerve impulses or hormones, rather electrical impluse SA Node - Answer Main natural pacemaker, faster conduction than autorhytmic fibres The Heart's electrical flow - Answer SA Node to AV Node - AV Node to AV Bundle - Bundle of HIS to L and R branches to Apex and Purkinje FIbres (which then cause systolic phase and ventricle contraction HR Increase - Answer Diastolic period decreases - causes an increase in MAP (main arterial pressure) ECG - Answer monitors electrical activity being produced by SA node (cardiac rhythm). P wave = atrial depolarization QRS complex - ventricle depolarization T wave = ventricle repolarization. T-P interval = diastolic filling time for atria. ECG Results - Answer Long P - R interval = first deg