Results:There are suitable thickness of infrahoid muscles,blood supply is from the superior thyroid artery.venous return of infrahyoid muscles is the superior thyroid vein.

• 结果:舌骨下肌群各肌厚度均较薄,供应动脉为甲状腺上动脉,回流静脉为甲状腺上静脉,舌骨下肌群的神经支配来自颈襻分支。