What is true about pharyngotympanic tube ( Eustachian tube) ?
Correct answer: B. Supplied by IX nerve
- A. It opens into oropharynx
- B. Supplied by IX nerve
- C. Lined stratified squamous epithelium
- D. It is cartilaginous throughout its length
Explanation
The pharyngotympanic tube has sensory innervation through the tympanic branch of the glossopharyngeal nerve. It opens into the nasopharynx, is lined mainly by respiratory epithelium and has both cartilaginous and bony parts.
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