 <translate> To answer this question, we should know that: During the ventricular contraction portion of the cardiac cycle, the Purkinje fibers carry the contraction impulse from both the left and right bundle branch to the myocardium of the ventricles. The answer is the myocardium of the ventricles. <yor> Ká tó lè dáhùn ìbéèrè yìí, ó yẹ ká mọ̀ pé: Nígbà tí ọkàn bá ń ṣiṣẹ́ lọ́nà yìí, àwọn fọ́nrán Purkinje ló máa ń gbé agbára tó ń mú kí ọkàn ṣiṣẹ́ láti apá òsì àti apá ọ̀tún àwọn ẹ̀ka tó ń mú kí ọkàn ṣiṣẹ́ lọ sí ibi tí ọkàn ti ń ṣiṣẹ́. Ìdáhùn náà ni myocardium tó wà nínú àwọn àyà inú. 