Hints for clinical clerks in medical cases / Westminster Hospital.

  • Westminster Hospital
Date:
[1863?]
Catalogue details

Licence: Public Domain Mark

Credit: Hints for clinical clerks in medical cases / Westminster Hospital. Source: Wellcome Collection.

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    tion decussate at the lower part of the medulla ob¬ longata, and chiefly at the anterior pyramids, and, secondly, that the conductors concerned in common sensation decussate in the spinal cord itself at or near the level at which they enter the cord. In the dia¬ gram, the lines a r and p r represent the anterior and posterior roots of a pair of spinal nerves, and the differently dotted continuations of these lines the course of these roots after entering the spinal cord and medulla oblongata, m o. The black spots g g, are intended for the ganglia on the posterior roots: the arrows indicate the direction of action in the two nervous tracts: the figures 1, 2, and 3, with the lines proceeding from them transversely, represent lesions of a lateral half of the cerebro-spinal axis above, at, and below the crossing of the anterior pyramids—lesions which, as will be seen at a glance, affect differently at each place the conductors con¬ cerned in voluntary motion and common sensation. The influence of each of these three lesions upon voluntary motion and common sensation is further shown in the accompanying table: the influence upon temperature, which is not constant, is not shown, but it generally happens that the temperature is raised in the parts where there is hypersesthesia. The cause of the Lypersesthesia is not very intelligible. Lesion 1. Above the Crossing of the Anterior Pyramids. Lesion 2. At the Crossing of the Anterior Pyramids. Lesion 3. JBeloto the Crossing of the Anterior Pyramids. Voluntary motion. Common sensation. Voluntary motion. Common sensation. Voluntary motion. Common sensation. Same side Normal £ Normal or Increased. Diminished or Lost. Normal or Increased. Diminished or Lost. Notably Increased. Opposite side. . Diminished or Lost. Diminished or Lost. Diminished or Lost. Diminished or Lost. Nearly Normal. Diminished, or Lost.