Experiments made with a view to ascertain the principle on which the action of the heart depends, and the relation which subsists between that organ and the nervous system / by A.P. Wilson Philip.

  • Philip, Alexander Philip Wilson, 1770-1847.
Date:
1815
Catalogue details

Licence: Public Domain Mark

Credit: Experiments made with a view to ascertain the principle on which the action of the heart depends, and the relation which subsists between that organ and the nervous system / by A.P. Wilson Philip. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    bowels obeys the same laws as the action of the heart. It appears from those experiments, that this motion is wholly independent of the nervous system. It continues till the parts become cold after the brain and spinal marrow are removed. I have already mentioned the circumstances which prevented our positively ascertaining, whether it is influenced by stimuli applied to the brain and spinal marrow, (Exp. 17.) but we know that the action of the bowels is frequently influenced by affections of the mind. From the whole of the foregoing experiments and obser- vations, it appears, 1. That the muscles of involuntary motion ob.ey the same laws with those of voluntary motion. Exp. 1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13, 14, 15, 16, and 17, compared with Exp. a8, and 19 ; see also observations under Exp. 19. 2. That the apparent difference in the nature of these muscles, arises from their being under the influence of diffe- rent stimuli; see observations under Exp. 19. 3. That they are both capable of being stimulated through the nervous system. Exp. 12, 13, 14, 15, 16. 4. That the power of both is independent of the nervous system. Exp. 1, 2, 3, 4, 5, 6, 7, 8, 10,11, 17, 18, and 19. 5. That what is called the nervous system consists of two parts, whose existence is not immediately dependent on each other ; the one performing the sensorial functions, the other conveying impressions to and from the sensoriuin, and, with- out bestowing any power on the muscular system, acting as a stimulus to it. See the observations under Exp. 19. See also Exp. 1, a, 3,4, 5,6,7,8,10, 11,18,19. E