Muscles of posterior pharyngeal wall were three couples of overlapped pharyngeal constrictor muscle.The nerves came from the branches of pharyngeal plexus.
英
美
- 结果:咽升动脉是咽后壁的主要供血动脉,咽后壁的肌肉由三对呈叠瓦状覆盖的咽缩肌组成,神经支配为咽丛神经的分支。