Researches upon the venom of the rattlesnake : with an investigation of the anatomy and physiology of the organs concerned . uscle. pterygoideus externus. The connection of the palate bone and the pterygoid bones,wliicli we have already noticed, is essential to this result. Almost all of the muscles about the head, neck, and jaws of the serpent, takepart either in the motions which precede the blow, or those which inflict and follow of these muscles have functions which are obvious and easily demonstrable;and we shall, therefore, content ourselves with the briefest reference to all but
Researches upon the venom of the rattlesnake : with an investigation of the anatomy and physiology of the organs concerned . uscle. pterygoideus externus. The connection of the palate bone and the pterygoid bones,wliicli we have already noticed, is essential to this result. Almost all of the muscles about the head, neck, and jaws of the serpent, takepart either in the motions which precede the blow, or those which inflict and follow of these muscles have functions which are obvious and easily demonstrable;and we shall, therefore, content ourselves with the briefest reference to all but theanterior temporal, which plays a far more important part, and requires a fullerdescription. The mouth is opened by muscles, such as the costo-mandibular and the vertebro-mandibular, with the help of a muscular layer analogous to the platysma articulation of the jaws is fixed by the double action of the digastricus andcervical angular muscles. Of the temporal muscles there are three. The anterior temporal, Fig. 4, a,functionally the most important, arises from behind the orbit and from the upper Fiff. Exhibiting the Relation of the Tempokal Mdscles to the Vejjom Gland, a—a, anterior temporal muscle ; 6, itsinsertion in the lower jaw ; c, venom gland ; d, the fang half 10 PHYSIOLOGY AND TOXICOLOGY two-thirds of the firm fascia of the poison gland. Its fibres run backwards overthis body and descend between it and the middle temporal muscle. In this coursethe fibres lie posteriorly to the suspensory ligament, and the outer ones, as theyfold about the articular end of the gland, lie in contact with the prolongation ofthe external lateral articular ligament upon that body. Finally, the milscle windsaround the commissure of the lips, and is inserted into the lower jaw some distancein front of the angle of the lips at h, Fig. 4. The middle and posterior temporal muscles. Figs. 4 and 5, arise chiefly from the
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Keywords: ., bookcentury1800, bookdecade1860, bookidresearch, booksubjectvenom
