Principles and practice of spinal adjustment; for the use of students and practitioners . on of the Tongue.—The innervation of thetongue is derived from the following nerves: 1. The hypoglossal and glosso-pharnygeal nerves are thetwo cranial nerves which directly supply the tongue. 2. The first and second cervical spinal nerves influencethe tongue by reason of the fibres which they send to thehypoglossal and glosso-pharyngeal nerves. Also by reasonof their communication with the superior cervical ganglionof the sympathetic, which in turn communicates wath thehypoglossal nerve by external branc
Principles and practice of spinal adjustment; for the use of students and practitioners . on of the Tongue.—The innervation of thetongue is derived from the following nerves: 1. The hypoglossal and glosso-pharnygeal nerves are thetwo cranial nerves which directly supply the tongue. 2. The first and second cervical spinal nerves influencethe tongue by reason of the fibres which they send to thehypoglossal and glosso-pharyngeal nerves. Also by reasonof their communication with the superior cervical ganglionof the sympathetic, which in turn communicates wath thehypoglossal nerve by external branches, and with the glosso-pharyngeal by a separate filament w^hich joins the petrosalganglion of that nerve. 3. The upper four cervical spinal nerves influence thetongue, by reason of their connection with the superior cervi-cal ganglion of the sympathetic which in turn communicateswith the cranial nerves, as follows: The lingual branch of thefifth, which supplies ordinary sensibility to the anterior two-thirds of the tongue; the chorda tympani. in the sheath of 130 SPINAL ADJUSTMENT. Fig. 20. Parts Influenced by the SecondDorsal Nerve. CRANIUM, FACE AND NECK 131 the lingual, which confers the sense of taste on the anteriortwo-thirds of the tongue; the lingual branch of the glosso-pharyngeal, which supplies sensation and the sense of tasteto the base and sides of the tongue; the superior laryngealbranches of the tenth, which distribute fine branches to theroot of the tongue near the epiglottis. Sympathetic fibres pass to the tongue from the nervimolles on the lingual and other arteries supplying the tongue. 4. The fifth, sixth, and seventh cervical nerves supply thetongue through their connection with the sympatheticbranches to the facial nerve. 5. The fifth thoracic spinal nerve has a marked effect uponthe tongue, by reason of its connection with the superiorcervical ganglion. This in turn communicates with theterminal ganglia of the tongue. The Innervation of the Teeth and O
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