The diseases of the nervous system. / by J.A. Ormerod.

  • Joseph Arderne Ormerod
Date:
1892
Catalogue details

Licence: Public Domain Mark

Credit: The diseases of the nervous system. / by J.A. Ormerod. Source: Wellcome Collection.

Provider: This material has been provided by Royal College of Physicians, London. The original may be consulted at Royal College of Physicians, London.

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    of the body, whether these be such as, ascending to the cortex cerebri, give rise to actual sensation, or such as call into action lower cerebral centres, or such as, entering the grey matter of the cord, give rise to the simpler spinal reflexes. Of the course pursued by sensory impulses after they reach the cord we know, anatomically, nothing; but it would appear from physiological experiment and some facts of disease that soon after entering the cord they cross to the other side.* The course of sundry upward nerve- tracts to the cerebellum and elsewhere we know, but we do not know their function. Reflex arc.—The path for reflex action within the Efferent path from cere- brum Diagram of a reflex arc (the numbers correspond to those in the text). cord is provided by the grey matter which joins the posterior nerve-roots to the anterior cornua. Thus, so far as a single spinal segment is concerned, the “ reflex arc,” as it has been termed, consists of the following parts: * But vide foot-note to p. 82. Fig. 3. i 1 7 1 V Afferent path A I to cerebrum | I
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