The anatomist's vade mecum : a system of human anatomy . sa itdivides into two branches; the smaller joins the pneumogastric im-mediately below the jugular ganglion, and contributes to the formationof the pharyngeal nerve; the larger or true continuation of the nervepasses backwards behind the internal jugular vein, and descendsobliquely to the upper part of the sterno-mastoid muscle. It piercesthe sterno-mastoid, and then passes obliquely across the neck, com-municating with the second, third, and fomth cervical nerves, andis distributed to the trapezius muscle. The spinal accessory sendsnume
The anatomist's vade mecum : a system of human anatomy . sa itdivides into two branches; the smaller joins the pneumogastric im-mediately below the jugular ganglion, and contributes to the formationof the pharyngeal nerve; the larger or true continuation of the nervepasses backwards behind the internal jugular vein, and descendsobliquely to the upper part of the sterno-mastoid muscle. It piercesthe sterno-mastoid, and then passes obliquely across the neck, com-municating with the second, third, and fomth cervical nerves, andis distributed to the trapezius muscle. The spinal accessory sendsnumerous twigs to the sterno-mastoid in its passage through thatmuscle, and in the trapezius the nervous filaments may be traceddownwards to its lower border. SPINAL ACCESSORY NERVE. 455 The pneumogastric and spinal accessory nerves togetlier (nervusvagus cum accessorio) resemble a spinal nerve, of wluch the formerwith its ganglion is the posterior and sensitive root, the latter theanterior and motor root. The deep origin of the spinal accessory Fis. 156.*. * The anatomy of the side of the neck, showing the nerves of the A fragment of the temporal bone containing the meatus auditorius extemus,mastoid, and styloid process. 2. The stylo-hyoid muscle. .3. The The stylo-pharyngeus. 5. The tongue. 6, 18. The hyo-glossus muscle;its two portions. 7. The genio-hyo-glossus muscle. 8. The both arise from the inner surface of the symphysis of the lower The sterno-hyoid muscle. 10. The sterno-thyroid. ^ 11. The thyro-hyoid,upon which the thyro-hyoidean branch of the hypoglossal nerve is seenramifying. 12. The omo-hyoid crossing the common caiotid artery (13), andinternal jugular vein (14). 15. The external carotid giving off its The internal carotid. 17. The gustatory neiwe giving off a branchy tothe submaxillary ganglion (18), and communicating a little further on withthe hypoglossal nerve. 19. The submaxillary, or Whartons du
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Keywords: ., boo, bookcentury1800, booksubjectanatomy, booksubjecthumananatomy
