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P wave: Atrial depolarizationQRS complex: Ventricular depolarizationT wave:Ventricular repolarizationPQ segment: Atrial contraction or atrial systoleST segment: Ventricular contraction or ventricular systoleThe P wave represents atrial depolarization, which is the electrical stimulation causing the atria to contract.The QRS complex signifies ventriculardepolarization,which is the electrical stimulation causing the ventricles to contract. The T wave corresponds to ventricular repolarization, where the ventricles regain their resting state after contraction. The PQ segment indicates the time between atrial contraction and ventricular contraction.The ST segment represents the time when theventriclesare fully contracted.Tagging:To know more aboutventriclesvisit:brainly.com/question/15740949#SPJ11...