I2I2 A MANUAL OF ANATOMY 



behind it, and the cartilaginous part of the Eustachian tube on its 

 inner side. The ganghon has three roots. One root (motor- 

 sensory) is derived from the internal pterygoid nerve, and 

 conveys to the ganglion motor fibres, and probably also sensory 

 fibres. A second root (sensory-motor) is represented by the small 

 superficial petrosal nerve, which joins the back part of the ganglion. 

 This root also conveys to the ganglion sensory and motor fibres. 

 The sensory fibres come from the glosso-pharyngeal, through means 

 of (i) the tympanic nerve or nerve of Jacobson, (2) the tympanic 

 plexus, and (3) the small superficial petrosal. The motor fibres 

 conveyed by this root come from the geniculate ganglion of the 

 facial nerve, through means of the branch which that ganglion gives 



Nasal Nerve 



Frontal Nervl 



Lachrymal Nerve, \ 

 Ciliary Ganglion , \ * 

 Internal Carotid Artery \ 



Lachrymal Gland 

 Ciliary Nerves 



Ophthalmic Nerve 

 Gasserian Ganglion ^- 

 Great Superficial Petrosal Ner\-e ,, 

 Branch to Small Sup. Pet. N 

 Facial Nerve in Aqueduct ^ 

 of Fallopius 



Posterior Auricular 

 Nerve 

 Facial Nerve 



Internal Carotid Artery /' 



Chorda Tympani Nerve '' / / ,' 

 Inferior Maxillary Nerve / / 

 Inferior Dental Nerve ' / 

 Otic or Arnold's Ganglion' 

 Lingual Nerve 



Branch of Third Nerve 



to Inferior Oblique 

 Sup. Maxillary Nerve 



Meckel's Ganglion 



Naso-palatine Nerve 



Ant. Palatine Nerve 



Submaxillary Ganglion 



Fig. 495. 



Sublingual Ganglion 

 -Scheme of the Fifth Cranial Nerve and its Ganglia 



(HiRSCHFELD AND LeVEILLE). 



to join the small superficial petrosal nerve. The third root (sympa- 

 thetic) comes from the sympathetic plexus around the middle 

 meningeal artery. 



Branches — (i) Of Communication. — (a) Two branches pass to the 

 auriculo-temporal nerve, one to each root. These convey to that 

 nerve glosso-pharyngeal fibres which are destined for the parotid 

 gland, (b) A branch joins the chorda tympani. (c) A branch joins 

 the Vidian nerve. 



(2) Of Distribution. — Muscular branches are given to the tensor 

 tympani and tensor palati. 



Submaxillary Ganglion.— This ganglion is of small size, and is 

 connected with the lingual nerve in the submaxillary region. It is 

 situated upon the upper part of the hyo-glossus muscle, between 

 the lingual nerve and the deep part of the submaxillary gland, and 

 under cover of the posterior part of the mylo-hyoid muscle. It is 



