H&N - The nasal cavity and bony sinuses

Median nasal septal cartilage
Lateral nasal cartilage
Lesser and greater alar cartilages
Smaller vomeronasal and accessory cartilages.

Vomer, perpendicular plate of the ethmoid bone and septal nasal cartilage.

Mucoperiosteum - and epithelial covering.

The turbinates or nasal conchae (superior, middle and inferior)

1. Frontal bone - anterior aspect
2. Perpendicular plate of the palatine bone - posterior aspect
3. Ethmoid bone - superior and middle conchae
4. Inferior concha
5. Maxillary bone (ant. nasal spine and nasal crest) - portion of the floor
6. Horizontal plate of the palatine bone (nasal crest) - posrtion of floor
7. Cribriform plate of the ethmoid bone, sphenoid bone, palatine bone, vomer, frontal bone and nasal bone - roof of the nasal cavity.

Superior and posterior to the superior meatus and posterior to the superior concha, is the point of drainage of the sphenoidal sinus - recess.

Composed of either a pseudostratified ciliated epithelium or a simple columnar epithelium. These epithelia contain goblet cells - secrete mucous

It is the infratemporal surface of the maxilla. The posterior superior alveolar foramina enter into the post walls. Small channels travel inferiorly to the floor of the sinus. these channels contain the posterior superior alveolar nerves that travel to the maxillary molars.

Thin orbital plate of the maxilla. The infraorbital nerve runs along the superior aspect of the orbital roof of maxilla - travels within the infraorbital canal and exits through the infraorbital foramen. Small canals exit from the infraorbital canal carryign branches of the middle superior alveolar nerves and vessels that travel to the premolars.

It is composed of the facial surface of the maxilla. The infraorbita canal descends from the roof and exits into the face through the maxillary bone - the anterior superior alveolar nerves and vessels that supply the maxillary incisors and canines run thorugh this small canal.

It is composed of the maxilla and small plates of the lacrimal and palatine bones. The Hiatus semilunaris is a continuity between the maxillary sinus and nasal cavity in the area of the middle meatus of the nasal cavity.

is found in the midline of the anterior aspect of the frontal bone and divided into 2 or more compartments - seperated by midline septum.
Drainage of the sinus travels through the frontonasal duct either into the frontal recess of the middle meatus or into the ethmoidal infundibulum

are a series of holes found in the midline of the sphenoid bone. It is normally asymmetrically seperated into 2 major portions via a sphenoidal septum. The sinus drains into the sphenoethmoidal recess through the sphenoidal ostium.