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What is The nasopharynx is lined by which epithelium and explain in detail?
The pharyngeal wall consists of 4 layers from within outwards 
1. Mucous membrane: Epithelium is ciliated columnar in the nasopharynx and stratified squamous elsewhere.
2. Pharyngeal aponeurosis (pharyngobasilar fascia).
3. Muscular coat: 2 layers
External layer :
- superior, middle, and inferior constrictors.
​​Internal layer :
- stylopharyngeus, salpingopharyngeus and palatopharyngeus muscle.
4. Buccopharyngeal fascia.