File:An academic physiology and hygiene (1903) (14594521489).jpg

Identifier: academicphysio00bran (find matches)
Title: An academic physiology and hygiene ..
Year: 1903 (1900s)
Authors: Brands, Orestes M. (from old catalog) Van Gieson, Henry C., (from old catalog) joint author
Subjects: Hygiene Physiology
Publisher: Boston, B. H. Sanborn & co
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress

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Fig. 47.EXPLANATION.A, A, the cerebrum; B, B, the cerebellum; C, C, the union of the fibres of the cerebrum ;D, D, the union of the fibres of the two sides of the cerebellum; E, E, E, the spinal cord;1, 1, the cranial nerves ; 2, 2, the branches of the spinal nerves that extend to the neck andorgans of the chest; 3, 3, the branches of the spinal nerves that extend to the arm andJingers ; 4, 4, 4, 4, the dorsal nerves that extend to the walls of the chest, back, loins,and abdomen ; 5,5, the lumbar nerves that also extend to the chest and abdomen ; 6, 6, thesacral nerves that unite and form the great sciatic nerve of the legs. THE NERVOUS SYSTEM. 247 mouth, throat, stomach, lungs, heart, and other internalorgans. One pair of the cranial nerves, the pneumo-gastric (Gr.pneuma, breath; and g-astcr, stomach), a veryimportant mixed nerve, sends both sensory and motoryfibres to the larynx, lungs, oesophagus, stomach, heart,
Text Appearing After Image:
Fig. 48. EXPLAN ATION. 2. the optic nerve, nerve of sight connected with the eyeballs. 3, the motor oculi, used to move the eyes. 4, the trochlearis, which rolls the eye downward. 5. the tri-gemini. whose three branches extend to the upper part of the face, to the upperjaw and teeth, to the lower jaw and teeth (this nerve is affected in toothache), to the tear-gland of the eye, and to the nose. O, the nerve of the tongue and of taste./, a branch of the nerve of taste, going to the ear. Q, the nerve of the teeth of the under jaw, which finally comes out on the chin to supplythe muscles of expression. 7, the auditory nerve, being the fierve of hearing. and liver. It will thus be seen that any disturbance ofits branches may cause serious complications of severalimportant organs. Each pair of nerves has a name indi-cative either of its function, location, or form. 248 ACADEMIC PHYSIOLOGY. 14. The Spinal Nerves, — The large nerves that originatefrom the spinal cord and pass off right and

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