Cardiac muscle fibers must organize themselves in parallel, then form physical and neural connections in order to conduct the electrical signals that allow the fibers to synchronize contractions.

• 因为在建造心脏组织时，肌纤维需要先自行平行排列，然后建立物理性和神经性连结，才能传导电讯号，让心肌纤维同步收缩。