The sphenoid sinus (sinus sphenoidalis) is located in the body of the sphenoid bone. The lower wall of the sinus is involved in the formation of the wall of the nasal cavity. To the upper part of the lateral wall is a cavernous sinus.
The frontal sinus (sinus frontalis) varies considerably in size. The septum, dividing the frontal sinus into the right and left parts, is usually asymmetric.
The occipital bone (os occipitale) is located in the posterior part of the brain area of the skull. In this bone, the basilar part, the two lateral parts and the occipital scales, which surround the large (occipital) foramen (foramen magnum), are distinguished.
The orbita (orbita) is a pair of cavities resembling a four-sided pyramid with rounded edges. The base of the pyramid is turned forward and forms the entrance to the eye socket (aditus orbitae).
The hyoid bone (os hyoideum) is located in the anterior region of the neck, between the lower jaw at the top and the larynx below. It consists of an arcuate bent body and two pairs of processes - small and large horns.
The cheek bone (os zygomaticum) is paired, connects the frontal, temporal and maxillary bones, strengthening the facial skull. In the malar bone, the lateral, temporal and orbital surfaces are distinguished.
The lacrimal bone (os lacrimale) is paired, forming the anterior part of the medial wall of the orbit. From below and from the front it is connected with the frontal process of the upper jaw, at the back - with the orbital plate of the latticed bone.
The nasal bone (os nasale) is paired, participates in the formation of the ossicus of the nose. The upper edge of the nasal bone is connected with the nasal part of the frontal bone, the lateral margin - with the frontal process of the upper jaw.
Vomer (vomer) - unpaired bone plate, participates in the formation of the bony septum of the nose. The lower edge of the opener fuses with the nasal crests of the maxilla and palatine bone.
