I230 



A MANUAL OF ANATOMY 



palate, except the tensor palati, (b) the constrictor muscles of the 

 pharynx, and (c) the intrinsic muscles of the larynx ; and (2) the 

 inhibitory fibres of the heart. 



The spinal part of the spinal accessory nerve passes backwards 

 and downwards either behind or in front of the internal jugular 



Fig. 501. — Scheme of the Glosso-pharyngeal, Pneumogastric, and 

 Spinal Accessory Nerves (Flower). 



G.P. Glosso-Pharyngeal. 

 J.G. Jugulrj: Ganglion 

 P.O. Petrous Ganglion 

 Ty. Tympanic Branch (Jacobson's Nerve) 

 C.Ty. Carotico-tympanic Nerve 

 T.P. Tympanic Plexus 

 T.B. Branches to Tympanum 

 S.S.P. Small Superficial Petrosal 

 S.D.P. Small Deep Petrosal 

 G.D.P. Branch to Great Deep Petrosal 

 Sv. Communicating from Sympathetic 

 D.F. Twig from Digastric Branch of Facial 

 S.P. Branch to Stylo-pharyngeus Muscle 



T. Tonsillar Branches 

 L.B. Lingual Branches 



PN. Pneumogastric. 



G.R. Ganglion of Root 



A. Auricular Branch (Arnold's Nerve) 



G.T. Ganglion of Trunk 



Sv. Communicating from Sympathetic 



ic. Branch from First Cervical 



H. Communicating with Hypoglossal 



P. Pharyngeal Branch 



P.P. 



SL. 



I.L. 



M.B. 



E.L.. 

 I.C.P. 

 T.G. 

 C.T. 

 S.C. 

 I.e. 

 R.L. 

 I. M.B. 



C.P. 

 T.Pn. 



Pharyngeal Plexus 



Superior Laryngeal 



Internal Laryngeal 



Branches to Mucous Membrane of 

 Larynx 



External Laryngeal 



Branch to Inferior Constrictor Muscle 



Branches to Thyroid Body 



Branch to Crico-thyroid Muscle 



Superior Cardiac Branch 



Inferior Cardiac Branch 



Recurrent Laryngeal 



Branches to Intrinsic Laryngeal Mus- 

 cles (except Crico thyroid) 



To Cardiac Plexus 



Thoracic Pneumogastric 



SP.A. Spinal Accessory. 



Sp.P. Spinal Portion of Spinal Accessory 

 2C. From Second Cervical 

 S.C.M. To Sterno-cleido-mastoid 

 3c. From Third Cervical 

 4c. From Fourth Cervical 

 Tr. To Tmpezius 



vein. It then pierces the deep surface of the sterno-cleido-mastoid, 

 which it supplies along with a branch of the second cervical nerve. 

 Thereafter it crosses the posterior triangle of the neck obliquely 

 downwards and backwards to the anterior border of the trapezius, 

 beneath which it passes, supplying the muscle, in company with 

 branches from the third and fourth cervical nerves. 



