. The anatomy of the domestic animals . Veterinary anatomy. BONES OF THE CRANIUM 135 They constitute the upper part of the posterior wall, bend sharply forward along tne lateral wall, and enter into the formation of the temporal fossa. The line of inflection is marked by the prominent parietal crest, which is continuous with the temporal crest below and the frontal crest anteriorly. The pari(>tals are excavated to form part of the frontal sinuses in the adult animal. Frontal Parietal eminence bone Zygomatic mrh Frontal banc Supraorbital foramen Supraorbital groove. Palatine fissure Maxilla
. The anatomy of the domestic animals . Veterinary anatomy. BONES OF THE CRANIUM 135 They constitute the upper part of the posterior wall, bend sharply forward along tne lateral wall, and enter into the formation of the temporal fossa. The line of inflection is marked by the prominent parietal crest, which is continuous with the temporal crest below and the frontal crest anteriorly. The pari(>tals are excavated to form part of the frontal sinuses in the adult animal. Frontal Parietal eminence bone Zygomatic mrh Frontal banc Supraorbital foramen Supraorbital groove. Palatine fissure Maxilla — Facial tuberosity Nasal process of premaxilla Palatine process of premaxilla Boilij of premaxilla Fig. 133.—Skull of Jersey Cow; Dorsal View. The condition in the young subject is as follows: The two parietals are united with each other and also with the interparietal and supraoocipital. The resulting mass is somewhat horseshoe- shaped. Its occipital part (Planum occipitale) forms the greater part of the posterior waU of the cranium and bears about its center the tuberosity for the attachment of the hgamentum nuchas. From either side of this a hne curves outward and divides the surface into an upper smooth area and a lower area which is rough for muscular attachment. The upper border joins the frontal bone and concurs in the formation of the frontal eminence. The temporal parts (Plana temporaha) are much smaller and are concave externally; they join the frontal above and the squamous temporal below. A median occipital crest extends ventrally from the external occipital protuberance. The frontal bones are very extensive, forming about one-half of the entire. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Sisson, Septimus, 1865-1924. Philadelphia ; London : W. B. Saunders Company
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