Researches upon the venom of the rattlesnake : with an investigation of the anatomy and physiology of the organs concerned . ion can be established betweenthe size and weight of the snake, and the weight of the gland, beyond the merefact of the general increase in the size of the organ, with that of the snake. The poison gland is invested with a double layer of white, and not very yield-ing fibrous tissue. The two layers of this membrane are united at the base of thegland, and becoming thinner anteriorly, they run off upon the duct, constitutinga portion of its thickness. Besides furnishing at
Researches upon the venom of the rattlesnake : with an investigation of the anatomy and physiology of the organs concerned . ion can be established betweenthe size and weight of the snake, and the weight of the gland, beyond the merefact of the general increase in the size of the organ, with that of the snake. The poison gland is invested with a double layer of white, and not very yield-ing fibrous tissue. The two layers of this membrane are united at the base of thegland, and becoming thinner anteriorly, they run off upon the duct, constitutinga portion of its thickness. Besides furnishing attachment for the anterior temporalmuscle, the outer layer of this capsule gives off three remarkable ligamentousexpansions which suspend and confine the gland. The posterior of these is a narrow, but strong ribbon of fibrous tissue, see , e, which runs from the posterior extremity of the gland to the articulation ofthe jaw, where it appears by its continuation backwards, to constitute one of theexternal ligaments of that joint. The second, which we shall term the suspensory ligament, lies behind the gland, Fig. <il Ne \C A. The Gland and Temporal MnscLES seen from above.—a, the gland ; h, anterior temporal muscle; c, suspensoryligament of the gland extended; d, duct, drawn from its position. B. Dlagram of D0CT and Gland—side view.—a, the venom gland; b, the duct, at its curve ; c, the sphincter; d,fang; e, superior maxillary hone. Fig. 6 ^, c, a little above its middle line. It arises as a fan-like expansion uponthe capsule, and finally narrows to one-third, and is inserted on the bony surface 12 PHYSIOLOGY AND TOXICOLOGY to the inner side of the gknd. This ligament is i-emarkably strong and unyield-ing ; it supports the gland perfectly, and even acts as a passive antagonist to theforce exerted by the anterior temporal muscle, while at the same time it sheltersthe large nerves which emerge beneath it from the skull. The third attachment of the gland is by mean
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Keywords: ., bookcentury1800, bookdecade1860, bookidresearch, booksubjectvenom
