622 
THE EXCITO-MOTORY NERVOUS SYSTEM OF 
TABLE OF THE ANATOMY OF THE TRUE SPINAL SYSTEM. 
I. The Incident Motor Branches. 
i. The Trifacial arising from — 
1. The Eye-lashes. 
2. The Alse Nasi. 
3. The Nostril. 
4. The Fauces. 
5. The Face. 
ii. The Pneumogastric, from — 
1. The Pharynx. 
2. The Larynx. 
3. The Bronchia. 
4. The Cardia, Kidney, and 
Liver. 
hi. The Glosso-Pharyngeal. (?) 
iv. The Posterior Spinal, arising 
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The General Surface. 
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The Anus. 
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The Cervix Vesicse. 
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The Cervix Uteri. 
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III. The Reflex Motor Branches. 
i. The Trochlearis ) n r 
ii. The Abducens S ' JCU u 
hi. The Minor Portion of the 5th. 
iv. The Facial, distributed to — 
1. The Orbicularis. 
2. The Levator Alae Nasi. 
v. The Pneumo-gastric, or its 
Accessory. 
1. The Pharyngeal. 
2. The CEsophageal and Car- 
diac. 
3. The Laryngeal. 
4. The Bronchial, &c. 
vi. The Hyo-glossal. 
vn. The Spinal Accessory, 
vm. The Spinal, distributed to — 
1. The Diaphragm, and to 
2. The Intercostal, & \ , 
3. Abdominal } muscles 
ix. The Sacral, distributed to — 
1. The Sphincters. 
2. The Expulsors, the Ejacu- 
lators, the Fallopian Tubes, 
the Uterus, &c. 
Some of the “ Incident Motor Nerves” are sentient; “ but, 
whether sentient or not, they are demonstrably excito-motor, and, 
whilst they are motor, they are incident .” 
“ By the cerebral system, we are placed in relation to the ex- 
ternal world physically or mentally ; by the true spinal system, 
we are placed in a similar relation physically. As by the former 
we imbibe all our ideas, so by the latter we appropriate external 
objects to our very substance. On the true spinal system, all 
ingestion, all retention, all expulsion, in regard to the animal 
frame and economy, depend.” 
“ Every such act is a spinal act — a true spinal act, reflex in 
its form and character, accomplished through the medium of 
the incident and reflex nerves, and this connecting centre the 
true spinal marrow, and by the agency of the vis nervosa .” 
In referring the centre of the excito-motory system of nerves 
to the medulla oblongata or spinalis, we are to understand that 
both those nervous bodies, as processes or prolongations from the 
cerebrum, belong to the cerebral system, and that only such parts 
of them as retain the vis nervosa after separation from the cere- 
brum belong to the excito-motory. These parts have hitherto 
eluded detection, or at least are at present, anatomically speak- 
ing, indemonstrable : though, as far as our knowledge extends at 
present, it appears that the ganglionic nerves are the voluntary, 
