. The anatomy of the domestic animals. Veterinary anatomy. 512 RESPIRATORY SYSTEM OF THE HORSE mass IS composed, there are three principal and numerous small passages, the ethmoidal meatuses (Meatus ethmoidales). The choanse or posterior nares are two elliptical orifices by which the nasal cavity and pharynx connnunicate. They are in the same plane as the floor of the. Fig. 455.—Cross-section of Head of Hokse. The section is cut midway between the medial canthus and the anterior end of the facial crest and i L front ^ 1, Septum nasi; 2, 3, 4, dorsal, middle, and ventral meatus nasi; 5, common
. The anatomy of the domestic animals. Veterinary anatomy. 512 RESPIRATORY SYSTEM OF THE HORSE mass IS composed, there are three principal and numerous small passages, the ethmoidal meatuses (Meatus ethmoidales). The choanse or posterior nares are two elliptical orifices by which the nasal cavity and pharynx connnunicate. They are in the same plane as the floor of the. Fig. 455.—Cross-section of Head of Hokse. The section is cut midway between the medial canthus and the anterior end of the facial crest and i L front ^ 1, Septum nasi; 2, 3, 4, dorsal, middle, and ventral meatus nasi; 5, common meatus nasi; 6, canity of dorsal turbinate bone (^ e., turbinate part of frontal sinus); 7, cavity of ventral turbinate bone (i. e., turbinate part of maxillary sinus); S, maxillary sinus; 9, communication between 7 and 8 over infraorbital canal; 10, naso-lacrimal duct; 11, infraorbital nerve and canal; 12, m. levator labii superioris proprius; 13, mouth cavity; 14, palatine artery; 15, fifth upper cheek tooth (posterior part); 16, sixth lower cheek tooth (anterior part); 17, m. buccinator; IS, hard palate; 19, vena refiexa; 20, superior buccal glands; 21, buccinator vessels and nerve; 22, alveolar vessels and nerve of mandible; 23, lingual artery; 24, mm. genio-glossi; 25, m. hyo-glossus (number placed between two radicles of lingual vein); 26, m. stylo-glossus; 27, m. mylo-hyoideus; 2S, m. genio-hyoideus; 29, Ungual nerve; 30, hypoglossal nerve; 31, sub- lingual artery; 32, m. digastricus (anterior belly). The mandibular duct is shown in the fat lateral to the genio-hj oideus but is not marked. nasal cavity, and are separated from each other by the vomer. They are, taken together, al^out two inches (ca. 5 cm.) wide and three to four inches (ca. 8 to 10 cm.) long. The nasal mucous membrane (Membrana mucosa nasi) is thick, highly vas- cular, and is, in general, firmly attached to the underlying periosteum and peri-. Please note that these images are extracted from scanned pag
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherphiladelphialondon
