. Human physiology. pearance of white hairs. They are attached tothe sphenoid bone in front, the parietal bones above, and the occipital bonebehind. They also send out processes which unite with the cheek-bones, form-ing bony arches. 22 ELEMENTARY PHYSIOLOGY The bones of the face are as follows Two superior lachrymal. Two inferior turbinated. One vomer. Two malar. One inferior maxillary. The superior maxillary bones (Lat. maxilla, a jaw) form the upper jaw,and the greater portion of the palate or roof of the mouth. In them are fixedthe upper set of teeth. Be
. Human physiology. pearance of white hairs. They are attached tothe sphenoid bone in front, the parietal bones above, and the occipital bonebehind. They also send out processes which unite with the cheek-bones, form-ing bony arches. 22 ELEMENTARY PHYSIOLOGY The bones of the face are as follows Two superior lachrymal. Two inferior turbinated. One vomer. Two malar. One inferior maxillary. The superior maxillary bones (Lat. maxilla, a jaw) form the upper jaw,and the greater portion of the palate or roof of the mouth. In them are fixedthe upper set of teeth. Behind these bones are the two palatal bones (, the roof of the mouth), which form the hinder portion of the palate. The nasal bones (Lat. nasus, the nose) are two very small bones, situatedbetween the sockets of the eyes, and forming the uppei and hard ridge of thenose. Very near these bones, separated from them by a narrow portion ofthe superior maxillaries, are two small bones called the lachrymal bones,. Fig. 22.—The Inferior Maxillary Bone. c, the condyles, which articulate with the temporal bones. lachrymal plates (Lat. lachryma, a tear), or tear-bones. They are so calledbecause they are grooved for the nasal ducts which convey the tears from theeyes into the cavities of the nose. A large portion of the face is occupied by the two nasal cavities and thebones which form their walls. The inferior turbinated bones (Lat. turbo, aturning round) are spongy bones which are curved round like scrolls, and pro-ject into the nasal cavities. These cavities are separated by a very thin bonecalled the vomer (Lat. a ploughshare). (See fig. 19.) The malar or cheek-bones (Lat. mala, the cheek) are the two most promi-nent bones of the cheeks. They unite with the superior maxillaries in front,and send out processes behind which join with similar projections from thetemporal bones, forming the arches which have already been mentioned. Thecheek-bones also help to form the sockets o
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