35+ Floor Of Maxillary Sinus Pictures. The maxillary sinus has a pyramidal shape, with its base directed medially against the nasal cavity and the apex pointing posterolaterally. Development begins in utero at 3 months as an evagination of the epithelium of the lateral wall.
Anatomy of the maxillary sinus.
The infraorbital nerve as well as artery traverses the roof in a bony canal. See more ideas about maxillary sinus, sinusitis, sinus infection. Open approaches to the maxillary sinus were first described in the early 1700s. Outline of bones of face, showing position of air sinuses.