. A text-book of animal physiology [microform] : with introductory chapters on general biology and a full treatment of reproduction, for students of human and comparative (veterinary) medicine and of general biology. Physiology, Comparative; Veterinary physiology; Physiologie comparée; Physiologie vétérinaire. n (•{!» Dalton). The rior or sensory and posterior. These facts have been established by a few simple but im- portant physiological experiments, which will now be briefly described: 1. Stimulation of the peripheral end of a spinal nerve g^ves rise to muscular movements; while stimulation
. A text-book of animal physiology [microform] : with introductory chapters on general biology and a full treatment of reproduction, for students of human and comparative (veterinary) medicine and of general biology. Physiology, Comparative; Veterinary physiology; Physiologie comparée; Physiologie vétérinaire. n (•{!» Dalton). The rior or sensory and posterior. These facts have been established by a few simple but im- portant physiological experiments, which will now be briefly described: 1. Stimulation of the peripheral end of a spinal nerve g^ves rise to muscular movements; while stimulation of its central end causes pain. 2. Upon section of the anterior root, stimulation of its central end gives negative results; but of its peripheral end causes muscular movements. 3. After section of the posterior root, stimulation of the distal end is followed by no sensory or motor effects; of its central end, by sensory effects (pain). These experiments show clearly that the anterior roots are motor, the posterior sensory, and the main trunk of the nerve made up of mixed motor and sensory fibers. SsoeptioiL—It has been found that sometimes stimulation of the peripheral end of the anterior root has given rise to pain, an effect which disappears if the posterior root be cut. From this it is inferred that certain sensory fibers turn up into the anterior root a certain distance. Such are termed " recurrent sensory ; Additional BzperiiiMnti.—1. It is found that if the anterior root be cut, the fibers below the point of section degenerate, while those above it do not. 8. On the other hand, when the posterior root is divided above the ganglion, the fibers toward the cord degenerate, while those on either side of the ganglion do not. From these experiments it is inferred that the cells of the posterior ganglion are essential to the nutrition of the sen- sory fibers, and those of the anterior horn of the cord to the motor fibers. PaihokcioaL—Pathology teac
Size: 1443px × 1731px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthormillswes, bookcentury1800, bookdecade1880, bookyear1889
