. On the anatomy of vertebrates. Vertebrates; Anatomy, Comparative; 1866. 228 ANATOMY OF VERTEBRATES. process of the mandil)le. From fascia attached to the neural spines of some of the anterior vertebraj there extends a flattened muscle, neuro-viandihularis, fig. 145, ^, which unites with a smaller strip from fascia connected with the ribs of those vertebras, costo-mandihulurk, figs. 145, 147, m, to be inserted into the lower border of the mandible. These muscles depress and retract the lower jaw. A powerful muscle, ectupterycjoideus, fig. 146, h, which in its mandibular relations resembles th
. On the anatomy of vertebrates. Vertebrates; Anatomy, Comparative; 1866. 228 ANATOMY OF VERTEBRATES. process of the mandil)le. From fascia attached to the neural spines of some of the anterior vertebraj there extends a flattened muscle, neuro-viandihularis, fig. 145, ^, which unites with a smaller strip from fascia connected with the ribs of those vertebras, costo-mandihulurk, figs. 145, 147, m, to be inserted into the lower border of the mandible. These muscles depress and retract the lower jaw. A powerful muscle, ectupterycjoideus, fig. 146, h, which in its mandibular relations resembles the external pterygoid, advances 146 '^^. Muscles of the ptcrygo-imlntine apparatus of the Crcta\ns, forward to the fore part of the ectopterygoid, and to the back part of the maxillary in Fi/tho]i. In Crofahis it expands into a fascia, spread over the pouch lodging the venom-fangs, preserving a tract of tendinous strength tor insertion into the lower part of the hinder process of the maxillary. It cooperates with the erector of the fang in fixing the moveable maxilla during the blow, and retracts the fang on the relaxation of the erector. When its fore part is the fixed point, the ectopterygoideus spreading its man-. 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 Owen, Richard, 1804-1892; Cornell University. College of Veterinary Medicine. Flower-Sprecher Veterinary Library. fmo. London, Longmans, Green
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