Observations on the ganglionic enlargement of the pneumo-gastric nerve; the probable function of that ganglion; and the position which it occupies in the human subject and in several of the lower animals / [Edward Cock].

  • Cock, Edward, 1805-1892.
Date:
1837]
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Licence: Public Domain Mark

Credit: Observations on the ganglionic enlargement of the pneumo-gastric nerve; the probable function of that ganglion; and the position which it occupies in the human subject and in several of the lower animals / [Edward Cock]. Source: Wellcome Collection.

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    In the Plate which accompanies this paper will be found diagrams of the more remarkable diversities of form which the ganglion presents in different animals. In some of the examples, the fibrillae of the pneumo-gastric trunk have been unravelled, and separated, to exhibit the partial con* nexion of the ganglion with the nerve. As far as my observations have carried me, the glosso¬ pharyngeal nerve appears to be furnished with a ganglion, in all respects similar to that which has formed the subject of this paper. EXPLANATION OF THE PLATE. Fig. 1. represents the pneumo-gastric nerves of the rabbit, with the gangli¬ onic enlargement and the superior laryngeal nerve of either side, arising from the ganglion, and passing to the larynx. Fig. 2.—The same in the ferret. Fig. 3—The same in the guinea-pig. Fig. 4.—Pneumo-gastric trunk of the dog, with the ganglion and superior laryngeal branch. In the three next diagrams, the fibres of the pneumo-gastric trunk have ; been separated from each other, in order to illustrate their partial connexion ' with the ganglion. Fig. 5.—Diagram of the pneumo-gastric nerve in the human subject:— i a The fibrillae by which the nerve arises from the respiratory track. j b The plexiform appearance produced by the interlacement of these fibrillae | as the nerve is leaving the foramen lacerum ; being the spot where its principal junction with the adjacent nerves takes place, c Ganglionic portion of the pneumo-gastric trunk. d Ganglion/^ss portion. e Ganglion. / Pneumo-gastric trunk below the ganglion; shewing the re-union of the two sets of fibres; viz. those proceeding from the ganglion, and the ' ganglionless portion. g The superior laryngeal branch arising from the ganglion. Fig. 6.—Pneumo-gastric trunk of the ass detached, as it leaves the base of the scull, and unravelled. (The letters refer to the same parts as in Fig. 5.) • i Fig. 7.—The same in the sheep.