Which structures’ mucous membranes are supplied by the nasal branch of the maxillary division?

Which structures’ mucous membranes are supplied by the nasal branch of the maxillary division?

• A. Structures: superior and middle conchae, posterior ethmoid sinuses, and posterior portion of the nasal septum
• B. Structures: anterior nasal septum only
• C. Structures: hard palate and anterior maxillary teeth
• D. Structures: floor of the nasal cavity only

Answer: (A)

The nasal branches that come from the maxillary division are the posterior superior nasal nerves. They enter the nasal cavity through the sphenopalatine foramen and provide sensory innervation to the mucosa of the superior and middle meatus, which includes the superior and middle conchae, the posterior ethmoid sinuses, and the posterior portion of the nasal septum. This is why these structures’ mucous membranes are supplied by the nasal branch of the maxillary division. The anterior nasal septum is supplied mainly by the nasopalatine nerve, while the hard palate and anterior maxillary teeth receive innervation from the greater palatine (and related) branches, and the floor of the nasal cavity is not served by these posterior nasal branches.

The nasal branches that come from the maxillary division are the posterior superior nasal nerves. They enter the nasal cavity through the sphenopalatine foramen and provide sensory innervation to the mucosa of the superior and middle meatus, which includes the superior and middle conchae, the posterior ethmoid sinuses, and the posterior portion of the nasal septum. This is why these structures’ mucous membranes are supplied by the nasal branch of the maxillary division.

The anterior nasal septum is supplied mainly by the nasopalatine nerve, while the hard palate and anterior maxillary teeth receive innervation from the greater palatine (and related) branches, and the floor of the nasal cavity is not served by these posterior nasal branches.