. The anatomy of the domestic animals. Veterinary anatomy. THE SKULL AS A WHOLE 75 extreme anterior part is the fossa for the lacrimal sac. Behind this there is a small depression in which the inferior obliciue muscle of the eye arises; here the plate which separates the orbit from the maxillary sinus is very thin. The dorsal wall (Paries dorsalis) is formed by the frontal and to a small extent by the lacrimal bone. It presents the supraorbital foramen, which perforates the root of the supraorbital process. The ventral wall (Paries ventralis) is very incomplete, and is formed by the malar, the
. The anatomy of the domestic animals. Veterinary anatomy. THE SKULL AS A WHOLE 75 extreme anterior part is the fossa for the lacrimal sac. Behind this there is a small depression in which the inferior obliciue muscle of the eye arises; here the plate which separates the orbit from the maxillary sinus is very thin. The dorsal wall (Paries dorsalis) is formed by the frontal and to a small extent by the lacrimal bone. It presents the supraorbital foramen, which perforates the root of the supraorbital process. The ventral wall (Paries ventralis) is very incomplete, and is formed by the malar, the zygomatic process of the temporal, and to a small extent by the max- illa. The lateral wall (Paries lateralis) is the supraorl)ital process. At the extreme posterior part is the orbital group of foramina. Four are situated in front of the pterygoid crest. Of these, the uppermost is the ethmoidal foramen, which trans-. FiG. 4S. Zygom t Supra- \L AND Orbital Regions of Skull of Horse: Lateral View. ORBITAL Process Have Been Sawn Off. Squamous part of occipital; P, parietal; S, squamous temporal; , basilar part of occipital; , body of sphenoid; ., temporal wing of sphenoid; ., orbital wing of sphenoid; /*(.p., pterygoid process of sphenoid; , perpendicular part of palate bone; F, F', facial and orbital parts of frontal bone; L, L', orbital and facial parts of lacri- mal bone; M, facial part of malar bone; A/.x., maxilla; a, parieto-occipital suture; b, squamous suture; c, d, spheno- squamous suture; e, fronto-palatine suture; /, fronto-lacrimal suture. 1, Occipital condyle; 2, condyloid fossa; 3, paramastoid process; 4, nuchal crest; 5, external occipital protuberance; 6, external acoustic meatus; 7, mastoid process; 8, hyoid process; 9, stylomastoid foramen; 10, muscular process; 11, foramen lacerum; 12, postglenoid process; 13, glenoid cavity; 14, temporal condyle; 15, pterygoid groove; 16, alar canal of pterygoid process incUcated by arrow; 17, alar f
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherphiladelphialondon
