Muscles of posterior pharyngeal wall were three couples of overlapped pharyngeal constrictor muscle.The nerves came from the branches of pharyngeal plexus.

• 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。