Which branch of the maxillary division innervates the mucous membrane of the nasal part of the pharynx?

Which branch of the maxillary division innervates the mucous membrane of the nasal part of the pharynx?

• A. Pharyngeal branch
• B. Nasal branch
• C. Orbital branch
• D. Greater palatine nerve

Answer: (A)

The branch that supplies sensation to the mucous membrane of the nasal part of the pharynx (nasopharynx) is the pharyngeal branch of the maxillary division. This branch travels through the palatovaginal canal to reach the nasopharyngeal mucosa and the auditory tube, providing sensory innervation there. Other branches have different targets: orbital branches supply the orbital region and nearby air cells, greater palatine nerve mainly innervates the hard palate (and contributes to nasal mucosa in parts), and typical nasal branches of V2 supply the nasal cavity itself rather than the nasopharynx.

The branch that supplies sensation to the mucous membrane of the nasal part of the pharynx (nasopharynx) is the pharyngeal branch of the maxillary division. This branch travels through the palatovaginal canal to reach the nasopharyngeal mucosa and the auditory tube, providing sensory innervation there.

Other branches have different targets: orbital branches supply the orbital region and nearby air cells, greater palatine nerve mainly innervates the hard palate (and contributes to nasal mucosa in parts), and typical nasal branches of V2 supply the nasal cavity itself rather than the nasopharynx.