. An analytical compendium of the various branches of medical science, for the use and examination of students. Anatomy; Physiology; Surgery; Obstetrics; Medicine; Materia Medica. UPPER EXTREMITY. 35 Zygomatic fossa, also called temporal, is the large fossa on either side of the head, formed by the parietal, sphenoid, temporal, and frontal bones, and bounded externally by the zygoma. The tem- poral muscle occupies nearly the whole. Pterygo Maxillary Fossa or Fissure.—This is at the bottom of the zygomatic fossa, and formed by the sphenoid, palate, and supe- rior maxillary bones. It is triangul
. An analytical compendium of the various branches of medical science, for the use and examination of students. Anatomy; Physiology; Surgery; Obstetrics; Medicine; Materia Medica. UPPER EXTREMITY. 35 Zygomatic fossa, also called temporal, is the large fossa on either side of the head, formed by the parietal, sphenoid, temporal, and frontal bones, and bounded externally by the zygoma. The tem- poral muscle occupies nearly the whole. Pterygo Maxillary Fossa or Fissure.—This is at the bottom of the zygomatic fossa, and formed by the sphenoid, palate, and supe- rior maxillary bones. It is triangular, and the base is upwards. The ganglion of Meckel is contained in it, which gives off branches going through the foramina which open upon this fossa. It is con- tinuous with the foramen lacerum inferius or spheno-maxillary slit. Facial Angle.—This is formed by drawing a straight line from the lower part of the frontal bone to the anterior nasal spine, and in- tersecting at this latter point by another drawn through the external meatus auditorius. It establishes a relation between the cranium and the face. The smaller the angle the more inferior is the con- formation. By comparing the heads of the great races of the world, it is found to be 80° to 85° in Europeans, 75° in the copper-coloured or Mongolians, and 70° in Negroes. HYOID BONE. This bone is isolated in the neck, connected with the root of the tongue and upper part of the larynx. It is shaped like the Greek u, the convexity being in front. It consists of a body and four cornua. The hochj^ is quadrilateral, convex in front, and concave behind. The front surface gives origin and insertion to muscles, '^' and has a well-marked projection. The great cornua^ are about an inch in length, and generally united to the body by means of cartilage and ligaments; they are flattened, project backwards, and terminate in a head or tubercle. They give origin and insertion to muscles. The lesser corrnta^ are attached at the jun
Size: 2030px × 1231px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., booksubjectmateriamedica, booksubjectmedi, booksubjectphysiology
