Principles and practice of spinal adjustment; for the use of students and practitioners . the cavern-ous plexus of the sympathetic, the third and sixth nerves andoccasionally with the fourth nerve. By means of this con-nection with the superior cervical ganglion of the sympatheticthe structures supplied by the trigeminal nerve may beinfluenced by adjustment of the upper four cervical vertebrae. 2. The facial nerves, which supply the remaining portionsof the skin of the face and the muscles of expression. Thisnerve communicates, through the geniculate ganglion, withthe sympathetic on the middle
Principles and practice of spinal adjustment; for the use of students and practitioners . the cavern-ous plexus of the sympathetic, the third and sixth nerves andoccasionally with the fourth nerve. By means of this con-nection with the superior cervical ganglion of the sympatheticthe structures supplied by the trigeminal nerve may beinfluenced by adjustment of the upper four cervical vertebrae. 2. The facial nerves, which supply the remaining portionsof the skin of the face and the muscles of expression. Thisnerve communicates, through the geniculate ganglion, withthe sympathetic on the middle meningeal artery by the ex-ternal superficial petrosal nerve. The structures which itsupplies are thus also influenced by adjustment of the upperfour cervical vertebrae. 3. The first, second, third, and fourth cervical nerves,which give off branches to form the cervical plexus which isdistributed to the integument and muscles of the face andneck. 4. The first six thoracic nerves send white rami communi-cantes to the superior cervical ganglion of the sympathetic, 116 SPINAL ADJUSTMENT. Fig. 13. Tarts Influenced by the ThirdCervical Nerve. CRANIUM, FACE AND NECK 117 which through its various communications influences theintegument of the face and neck. 5. The tenth thoracic nerves by reason of their influenceupon the function of the skin, affect the integument of theface and neck. These nerves also have a decided influenceupon the action of the kidneys, and by increasing the elimina-tion of fluids through this channel, will diminish theelimination through the skin. The Innervation of the Brain.—Various nerves are dis-tributed to the substance of the brain and its meninges, andgovern its function, metabolism and the circulation of theblood through it. ? The brain is accordingly innervated bythe following nerves: 1. The dura mater is supplied by filaments from the Gas-serian ganglion, from the ophthalmic, superior maxillary,inferior maxillary, vagus, and hypoglossal nerves, and
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