. A text-book of comparative physiology [microform] : for students and practitioners of comparative (veterinary) medicine. Physiology, Comparative; Veterinary physiology; Physiologie comparée; Physiologie vétérinaire. iture iaui lar power tot uauslly usually to le pmterior ua, may be sated. Oo- ident upon mplex. It oonneoting ta different le poadbly w-rooUon «&- half of the side of the d by other »ts are not the aide of pyramidal It of theae THE SPINAL 478 divitiont of the oord are by no meana well eatabliahed. It ia poMible that vaso-motor, reapiratory, and probably other
. A text-book of comparative physiology [microform] : for students and practitioners of comparative (veterinary) medicine. Physiology, Comparative; Veterinary physiology; Physiologie comparée; Physiologie vétérinaire. iture iaui lar power tot uauslly usually to le pmterior ua, may be sated. Oo- ident upon mplex. It oonneoting ta different le poadbly w-rooUon «&- half of the side of the d by other »ts are not the aide of pyramidal It of theae THE SPINAL 478 divitiont of the oord are by no meana well eatabliahed. It ia poMible that vaso-motor, reapiratory, and probably other kinda of impulaea, paM by portions of the latenl traota other than the croMwd pyramidal. When a lateral half of the oord ia divided, the Iom of function ia not permanent in all inatanoea, but has been reoovernd from without any regeneration of the divided flbera; and even when a section has been made higher up on the opposite side, partial recovery haa again followed; 80 that it would appear that impulaea had pursued a tigsag course in such cases. We do not think that such experiments show that impulses do not usually follow a definite course, but that the reaouroes of nature are great, and that, when one tract is not available, another is taken. It is plain that impulses do not in any oaae travel by one and the same nerve-flber throughout the cord, for the siie of this organ does not permit of such a view being entertained; at the same time there is a relation between the sise of a crossHwotion of the oord at any one point and the number of nerves con- nected with it at that region. We may attempt to trace the patha of impulses in a oord somewhat as follows: 1. Volitional impulses decussate chiefly. 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 Mills, Wesley, 1847-1915. New York : D. Appleton; London
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Keywords: ., bookauthormillswes, bookcentury1800, bookdecade1890, bookyear1890
