1 ﹒颧骨zygomatic bone。3 ﹒下颌切迹mandibu lar notch。4 ﹒下颌支ramus of mandible。5 ﹒咬肌masseter。6 ﹒颈阔肌platysma。7 ﹒胸锁乳突肌sternocleidomastoid muscle。9 ﹒颅中窝middle cranial fossa。12 ﹒腮腺parotid gland。13 ﹒肩胛提肌levator scapulae。5 ﹒舌深动脉deep lingual artery。2 ﹒鼻翼alae nasi。6 ﹒颏下间隙s ......