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Phases of Cardiac Cycle PQRST Heart Rhythm Interpretation - StudyPK
Physiology of the Heart Cardiac Conduction System Animation Normal sinus rhythm on an EKG Phases of Cardiac Cycle There are two phases of the cardiac cycle. In the diastole phase, the heart ventricles are relaxed and the heart fills with blood. In the systole phase, the ventricles contract and pump blood out of the heart
Ordinary heart cells become 'biological pacemakers' with injection of single gene
Researchers have reprogrammed ordinary heart cells to become exact replicas of highly specialized pacemaker cells by injecting a single gene -- a major step forward in the decade-long search for a biological therapy to correct erratic and failing heartbeats.
