ANATOMY IN A NUTSHELL. 



411 



the pharyngeal plexus. This union takes place opposite the Middle constrictor 

 of the pharynx. Branches from this plexus perforate the muscular coat of the 

 pharynx to supply the muscles and the mucous membrane. 



(3) Muscular branch which is distributed to the Stylo-pharyngeus mus- 

 cle, receives a communication from the seventh nerve. 



(4) The tonsillar branches, which are small, arise undercover of the 

 Hyo-glossus muscle. They pass to the tonsil around which they form a plexus, 

 circulus tonsillaris. From this plexus twigs pass to the pillars of the fauces and 

 to the soft palate where they communicate with the palatine nerve. 



PLATE CCXXI. 



STEP'. V 



LOCUS PERFORATES' / 

 POSTICUS . // 



M'ODLE PEDUNCLE 



OP 

 THE CEREBELLUM 

 RESTIFORM BODY 



OLIVARY BODY 



= •=:•,■ - 



ANTERIOR SUPERFICIAL 

 ARCUATE FIBERS 



DECUSSATION OF 



OPTIC NERVE 

 INFUNDIBULUM 



TUBER CINEREUM 

 CORPORA VAMMILLARIA 



0CUL0-M0T0R III.' 



TROCHLEAR NERVE IV. WINDING ROUND THE CRUS CEREBRI 



TRIGEMINAL NERVE V 



ABDUCENT NERVE VI.) 



FACIAL NERVE VII. 



SUPERIOR SEMICIRCULAR CANAL 



EXTERNAL SEMICIRCULAR CANAL 



POSTERIOR SEMICIRCULAR CANAL 



Origin and Distribution of Auditory Nerve. 



(5) The lingual nerves are two in number, one supplies the circumval- 

 late papillae and mucous membrane of the base of the tongue, and the other sel 

 supplies the mucous membrane and follicular glands and the posterior one-halt 

 of the g tongue and communicates with the Lingua] nerve. 



LESSON CXVI. 



The tenth cranial nerve, pneumogastric, or vagus. Pancoasl rails this 

 nerve the auriculo-laiyngo-pharyngo-03sophago-tracheo-pulmono-cardio-gas- 



tro-hepatic. This is a compound nerve and sends motor and sensory fibers 

 the organs of voice and respiration, and motor fiber* to the pharynx, the oesopha- 



