A bundle of modified heart muscle fibres (Purkinje fibres) passing from the atroventricular node forward to the septum between the ventricles, where it divides into right and left bundles, one for each ventricle, The fibres transmit contraction waves from the atria, via the AV node to the ventricles
A group of cells in the heart located between the upper two chambers (the atria) and the lower two chambers (the ventricles) that regulates the electrical current that passes through it to the ventricles
One of the valves which control blood flow from the atriums to the ventricles, and prevent backflow. (see ‘Mitral Valve’ and ‘Tricuspid Valve’).