THE CEANIAL NERVES. 



become ncgTegated togethei' ; and it here presents a ganglionic enlarge- 

 ment, distinguished as the ganglion of the root of the pneumo-gastric. 

 After its passage through the foramen, it is joined by the accessory 



Fig. 348 — \n,\V <Jh IHl. x\LK\Lb UF TUK Eluliril 1' \IK, Till liv JJJMI.IXjL J luN AND 



Connection on the Left Side (from Sappey after Hirsclifekl and Leveille). ^ 

 1, pneumo-gastric nerve in the neck ; 2, ganglion of its trunk ; 3, its union vAih the 

 spinal accessory ; 4, its union with the hji^oglossal ; 5, phai-yngeal branch ; 6, superior 

 laryngeal nerve ; 7, external laryngeal ; 8, laiyngeal plexus ; 9, inferior or recurrent 

 laryngeal ; 10, superior cardiac branch ; 11, middle cardiac ; 12, plexiform x'art of the 

 nerve in the thorax ; 13, posterior pulmonary plexus ; 14, lingual or gustatory nerve of 

 the inferior maxillary ; 15, hj^^oglossal, passing into the muscles of the tongue, giving 

 its thyro-hyoid branch, uniting with twigs of the lingual ; 16, glosso-pharj-ngeal nerve ; 

 17, spinal accessoi'y nerve, uniting by its inner branch ■with tlie pneumo-gastric, and by 

 its outer, passing into the sterno-mastoid muscle ; 18, second cervical nerve ; 19, thinl ; 

 20, fourth ; 21, origin of the phrenic nerve ; 22, 23, fifth, sixth, seventh, and eighth 

 cervical nerves, forming with the first dorsal the brachial plexus ; 24, superior cervical 

 ganglion of the sympathetic ; 25, middle cervical ganglion ; 26, inferior cervical ganglion 

 united with the first dorsal ganglion ; 27, 28, 29, 30, second, third, fourth, and fifth 

 dorsal ganglia. 



