1 ﹒颅中窝middle cranial fossa。2 ﹒颧弓zygomatic arch。3 ﹒后鼻孔choanae。4 ﹒软腭soft palate。5 ﹒咬肌masseter。6 ﹒下颌舌骨肌mylohyoid muscle。7 ﹒下颌下间隙submandibular space。8 ﹒胸锁乳突肌sternocleidomastoid muscle。9 ﹒锁骨下静脉subclavian vein。11 ﹒蝶窦sphenoid sinus。14 ﹒下颌骨mandible。16 ﹒舌骨体body of ......