The brain-machine, its power and weakness / [Albert Wilson].

  • Albert Wilson
Date:
1899
Catalogue details

Licence: Public Domain Mark

Credit: The brain-machine, its power and weakness / [Albert Wilson]. Source: Wellcome Collection.

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    Fig. 3/. The sympathetic system. The diagram shows the skull with— The cerebrum (c). The cerebellum (cl). The medulla (m). The pons (p). sfi- The spinal cord, at the enlarged part where the nerve-roots pass out to the arm. Spi. Where the spinal nerves leave for the legs. 7c show the 7 vertebras of the neck. 12d ,, 12 ,, „ back. 5l „ 5 ,, „ lumbar region, s. The sacrum, or keystone of the pelvic arch. In front of the spine (they should be at the side) are represented the chain of sympathetic ganglia; as a rule, one for each segment or vertebra. There are 4 behind the face, 3 large ones in the neck, 12 in the chest, and about 10 lower down. Ca is a large plexus for the heart and lungs. So „ ,, „ stomach and digestive organs. h ,, ,, ,, lower abdominal organs. They send branches in all directions, especially along the spinal nerves and blood-vessels, and to all the organs. See the earlier chapters, where the sympathetic is shown to correspond to the ganglia in the worm, lobster, snail, and other invertebrates. In four places the bony arches are shown behind the vertebrae forming the canal which protects the spinal cord. [I am indebted to Mr. Douglas Pitman for assisting in the execution of these diagrams.]
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