Mr 10 Deviation Betwixt Sa Node Together With Av Node
The automatic rhythmicity of the pump is its mightiness to contract spontaneously too at a regular rate. The impulse of contraction of the pump originates inward the sino atrial node (SA node) situated inward the correct atruim about the indicate of entry of the vena cava. SA node consists of a pocket-sized number of diffusely oriented cardiac fibres, possessing few myofibrils, and a few nervus endings from the autonomic nervous system.It is too known every 2nd the measuring maker of the heart. Atrioventricular Node or AV node: It is compact one-half oval majority of myogenic fibres which lies inward the posterior septal wall of correct atrium nearly the opening of coronary sinus. It receives impulse from SA node too transmits it to ventricles. Direct transmission of impulse from SA node to ventricles is non possible due to the absence of continuity of muscles betwixt atria too ventricles too the presence of fibrous connexion tissue of atrioventricular septum. T...