05.This is cardiac hypertrophy. The number of myocardial fibers never increases , but their size can increase in response to an increased workload , leading to the marked thickening of the left ventricle in this patient with hypertension.

05.图示肥大的心肌。心肌纤维的数目不增加，但体积随着工作负荷的增加而增加，导致该高血压患者的左室显著肥大。