But pronounced difference was found between anterior digastricus during gum chewing movement and together with sternocleidomastoid during cervical-head movement in patient group. 患者组咀嚼运动时双侧二腹肌及颈肩部运动时双侧胸锁乳突肌、二腹肌肌电幅值有明显差异。
Posterior belly of digastricus and its adhesion of mastoid are important marks in searching for the middle part of external carotid artery. 二腹肌后腹及其乳突附着是寻找颈外动脉中段的重要标志。