1. Glossopharyngeal, vagus, accessory and
hypoglossal nerve
Dr Gallatz Katalin

2. BRAIN EXIT OF THE CRANIAL NERVES

3. GLOSSOPHARYNGEAL NERVE IX.

4. GLOSSOPHARYNGEAL NERVE IX.
LEAVES THE SKULL THROUGH THE JUGULAR FORAMEN.
THE FIST BRANCH – TYMPANIC NERNE ORIGINATES IN THE PETROSAL FOSSULA
IT HAS TWO SENSORY GANGLION: SUPERIOR (JUGULAR) AND
(PSEUDOUNIPOLAR CELLS) INFERIOR (PETROSAL)

5. NUCLEI OF GLOSSOPHARYNGEAL NERVE:
ambiguus nucleus SVM
inferior salivatory nucleus GVM
nucleus of the solitary tract SVS
nucleus of the spinal trigeminal tr. GSS

7. Sensory ganglia of the glossopharyngeal nerve
PETROSAL GANGLION (INFERIOR)
JUGULAR GANGLION (SUPERIOR)
Vegetative (parasympathetic) ganglion:
OTIC GANGLION

8. GLOSSOPHARYNGEAL NERVE INNERVATES
WITH SOMATOSENSORY FIBERS: posterior 1/3 of the tongue
palatine tonsil
WITH SPECIAL VISCEROSENSORY FIBERS:
taste buds of the circumvallate papillas
WITH GENERAL VISCEROSENSORY FIBERS:
mucous membrane of the pharynx
receptors of thecarotid sinus
WITH GENERAL VISCEROMOTOR (parasympathetic) FIBERS:
parotid gland
WITH SPECIAL VISCEROMOTOR FIBERS:
levator veli palatini muscle
stylopharyngeus muscle
constrictor muscles (pharyngeal plexus)

9. BRANCHES OF GLOSSOPHARYNGEAL NERVE:
TYMPANIC NERVE GVM, GSS TYMPANIC PLEXUS LESSER PETROSAL NERVE GVM
PHARYNGEAL BRANCHES PHARYNGEAL PLEXUS SVM, GVM, GSS
NERVE FOR CAROTID SINUS GVS
TONSILLARY BRANCH GVS
LINGUAL BRANCHES SVS, GVM, GSS

11. TYMPANIC NERVE GVM, GSS TYMPANIC PLEXUS LESSER PETROSAL NERVE GVM

12. TYMPANIC PLEXUS tympanic nerve (IX.) communicating ramus of VII n.
caroticotympanic nerves:
(postganglionar sympathetic
fibers from the carotid plexus)

13. LESSER PETROSAL NERVE contains parasympathetic preganglionic fibers.
These fibers terminate in the otic ganglion (just beneath the oval foramen).
The postganglionis fibers join to the auriculotemporal nerve and provide the
Secretomotor innervation of the parotid gland

14. NERVE FOR CAROTID SINUS (HERING’S) GVS

15. TONSILLARY BRANCH GVS
LINGUAL BRANCHES SVS, GVM, GSS
PHARYNGEAL BRANCHES PHARYNGEAL PLEXUS SVM, GVM, GSS

17. VAGUS NERVE X.

18. Nuclei of the vagus nerve:
ambiguus nucleus SVM
dorsal nucleus of the vagus nerve GVM
lateral nucleus of ala cinerea GVS
nucleus of the solitary tract SVS
nucleus of the spinal trigeminal tr. GSS

20. Vegetative (parasympathetic) ganglia can be found in the wall
Sensory ganglia of the vagus nerve
superior (jugular) ggl.
inferior (nodose) ggl
Vegetative (parasympathetic) ganglia can be found in the wall
of the viscera
intramural ganglia

21. Vagus nerve innervates
With branchialmotor SVM fibers
- levator veli palatini,
- middle constrictor of the pharynx
- inferior constrictor pharynx
- muscles of the larynx and esophagus
With somatosensory fibers
- mucous membrane of the larynx,
- mucous membrane of the inferior part of the pharynx
- epiglottic vallecules
- posterior part of the dura mater
- posterior part of the skin of the external acustic meatus

22. With special viscerosensory fibers
- the taste buds around the epiglottic vallecules and around the
aditus laryngis
General viscerosensory and visceromotor fibers
the larynx, trachea, oesophagus, bronchi,
lungs, heart and abdominal viscera from the stomach to the
left colic flexura

23. Branches of the vagus nerve
Cranio-cervical part
1. posterior meningeal branch
2. auricular branch
3. pharyngeal
4. superior laryngeal nerve
5. superior cardiac nerves
6. recurrant laryngeal nerve:
- inferior laryngeal nerve,
- inferior cardiac nerves,
- tracheales branches,
- esophageal branches

24. Branches of the vagus nerve
Thoracic part
- cardiac branches
- bronchial branches
- pericardiac branches
- oesophageal branches
Adominal part
- branches for the viscera
gastric plexus
hepatic plexus
coeliac plexus
renal plexus

25. Submandibular ggl. Otic ggl Branches of trigeminal nerve n. facialis
nucl. saliv. sup
Zygomatic n./lacrimal n. Lacrimal gland
Pterygopalatine ggl.
Greater petrosal n.
Post.nasal nerves, nasopalatine n.,greater and lesser palatine nerves
Palatine and nasal glands
Submandibular ggl.
Lingual n.
submandibular, sublingual and anterior lingual gl.
chorda tympani
Glossopharyngeal n.
inf. salivatory n.
Otic ggl
auriculotemporal n.
Parotid gland
tympanic n. /lesser petrosal n.

28. Nuclei of the accessory nerve:
ambiguus nucleus SVM cranial root
motoneurons of the C1-6 SM spinal root

29. Branches of the accessory nerve
1. External branch SM
innervates the sternocleidomastoid and trapezius
2. Internal branch SVM
joins to the vagus
helps in the innervation of
the arytenoideid muscle

30. Spinal root of the accessory nerve

31. PHARYNGEAL PLEXUS

32. Hypoglossal nerve
Innervates: all the extrinsic and intrinsic muscles of the tongue :

35. DEEP ANSA CERVICALIS

36. Parapharyngeal region
Nerves:
glossopharyngeal n.,
sympathetic trunk
vagus n.,
hypoglossal n.
accessory nerve

38. Thank you for your attention!