Accessory Hypoglossal External carotid nerve nerve artery Stylohyoid Nerve to mylohyoid Occipital artery Facial artery Sternocleidomastoid Submental artery Internal jugular vein Mylohyoid Internal carotid artery m Digastric, anterior belly Hyoid bone Lingual artery Thyrohyoid Internal laryngeal nerve External carotid artery External laryngeal nerve Vagus nerve Ansa cervicalis Omohyoid Inferior constrictor Superior thyroid artery Common carotid artery Sternohyoid 动脉:颈总动脉、颈外动脉及其分支(甲状腺上动脉、舌动脉、面动脉和枕动脉)和 颈内动脉。 静脉:颈內静脉及其属支 神经:舌下神经及其降支、副神经、迷走神经及其分支(喉上神经的外支和内支 二腹肌后腹• 动脉：颈总动脉、颈外动脉及其分支（甲状腺上动脉、舌动脉、面动脉和枕动脉）和 颈内动脉。 • 静脉：颈内静脉及其属支 • 神经：舌下神经及其降支、副神经、迷走神经及其分支（喉上神经的外支和内支） • 二腹肌后腹 Common carotid artery Occipital artery