<prompt> Concentric hypertrophy of heart is associated -Systemic HypertensionMitral regurgitaionHypertrophic cardiomyopathyMitral stenosis  <response>: Adaptations in heartThe cardiac myocyte is a terminally differentiated cell that is not able to divide,Myocardium cannot undergo hyperplasia, i.e. an increase in the number of myocytes,So, myocardium can adapt by increasing the size i.e. hypertrophy of the myocyte in response to stress,There are two types of stresses to heart1. Pressure overloadOccur in hypertension or aortic stenosis.Pressure overloaded ventricles develop concentric hypertrophy of the left ventricle, with increased in wall thickness Heart size may increase.The increase in wall thickness may reduce the cavity diameter ratio of cavity size to wall thickness decreases.There is an increase in the transverse diameter width of myocytes, but cell length remains the same.2. Volume overload As occurs in aortic regurgitationThere is dilatation of ventricular chamber along with the increased thickness of ventricular wall Eccentric hypertrophy.There is increasing both in the transverse diameter width and the length of myocytes. It is due to deposition of the sarcomeres functional intracellular contractile unit of cardiac muscles in parallel to the long axis of cells.Concentric hypertrophy In pressure overload, e.g. hypertension and aortic stenosis.Eccentric hypertrophy In volume overload, e.g. in aortic regurgitation. 