P wave- depolarisation of the ATRIA leading to ATRIAL SYSTOLE.
PR interval- the time taken for impulses to be conducted from the SAN across the atria to the ventricles, through the AVN.
QRS complex- the wave of depolarisation resulting in contraction of the VENTRICLES.
T wave- repolarisation (recovery) of the VENTRICLES during the heart's relaxation phase (DIASTOLE).
Comments
No comments have yet been made