Researches upon the venom of the rattlesnake : with an investigation of the anatomy and physiology of the organs concerned . a, Epithelial cells of main duct, and of the receptacle at the base of the gland; 6, pigment-cells of the duct. Fig. NON-STKIATED MdSCULAB FiBEE-CELLS OF THE SPHINCTER OP THE DuCT. Upon caieful examination of the nature of this tissue, I found it to be formedby an increase in the amount of fibrous tissue, and by the addition of a layer of OP THE VENOM OF THE RATTLESNAKE. 15 elongated fusiform cells, Fig. 9, each having a single nucleus, and sometimes a long,dark nucl
Researches upon the venom of the rattlesnake : with an investigation of the anatomy and physiology of the organs concerned . a, Epithelial cells of main duct, and of the receptacle at the base of the gland; 6, pigment-cells of the duct. Fig. NON-STKIATED MdSCULAB FiBEE-CELLS OF THE SPHINCTER OP THE DuCT. Upon caieful examination of the nature of this tissue, I found it to be formedby an increase in the amount of fibrous tissue, and by the addition of a layer of OP THE VENOM OF THE RATTLESNAKE. 15 elongated fusiform cells, Fig. 9, each having a single nucleus, and sometimes a long,dark nucleolus. These elements are undoubtedly the characteristic cells of non-striated ^ Their presence, together with the form and position of this enlargement,enables us to view it as a sphincter placed upon the duct, for the purpose ofrestraining the wasteful flow of the secretion. This portion of the wall of the ductcontains numerous irregular, stellate, pigment-cells. Fig. 8, h. So far as I amaware, no author has described this adjunct to the venom apparatus. Of its pur-pose, however, I have no doubt; and that some such provision does exist, is plain,from the fact that, when in the living Rattlesnake the jaws are separated,
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Keywords: ., bookcentury1800, bookdecade1860, bookidresearch, booksubjectvenom
