A manual of anatomy . The marginal process is anterior and somewhat curved. The in-ferior process is the least marked. The margins connecting theseprocesses are mostly thin and sharp. The temporal margin has aprojection, the processus marginalis, and with the orbital and masset-eric margins is free. To the latter is attached the m. maxillary margin is articular. The medial surface is divided by the orbital process which sepa- THE MANDIBLE 6S rates the concave infratemporal from the orbital areas (also calledsurfaces). Part of the orbital process is nonarticular and forms theanteri
A manual of anatomy . The marginal process is anterior and somewhat curved. The in-ferior process is the least marked. The margins connecting theseprocesses are mostly thin and sharp. The temporal margin has aprojection, the processus marginalis, and with the orbital and masset-eric margins is free. To the latter is attached the m. maxillary margin is articular. The medial surface is divided by the orbital process which sepa- THE MANDIBLE 6S rates the concave infratemporal from the orbital areas (also calledsurfaces). Part of the orbital process is nonarticular and forms theanterior boundary of the inferior orbital fissure. The orbital areaof the medial surface exhibits two foramina {zygomaticoorbitale) oneof which is the internal opening of the zygomatocofacial canal (forthe zygomaticofacial branch of the zygomatic nerve); the other isthe zygomaticotemporal canal (for the zygomaticotemporal nerve).The former canal opens upon the lateral surface of the bone and thelatter in the temporal Tfmporal prorc Malar surface Fig. 43.—The right malar bones seenfrom the lateral saiface. {SoboUa andMcMurrich.) Temporal surface Fig. 44.—The right malar bone seenfrom the medial or temporal surface.(Sobntta and McMurrich.) Articulations.—With the temporal, frontal, sphenoidal and maxillary bones(fourj. Ossification.—It is of intramembranous origin and is developed from threecenters. The center for the orbital portion appears about the eighth to the tenthweek and forms the bulk of the body and the temporal process; a second centerforms the temporal fossa part of the body and the third forms the lower part ofthe body. These fuse at about the fifth month of fetal Ufe but sutures may persistbetween these throughout life. Muscle Attached.—Jim. caput infraorbitale, zygomaticus, caput zygomaticumand masseter (four). THE MANDIBLE (MANDIBULA) The mandible is V-shaped with its extremities turned constitutes the entire lower jaw and is the strongest bo
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecthumananatomy, bookyea
