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Last 4 Cranial Nerves (Anatomy of the Neck)

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LAST 4 CRANIAL
NERVES
(Page 92)
Dr. Sherif Fahmy

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Deep Origin (Nuclei) of Last 4 cranial
nerves
9th
C.N.
10th
C.N. 11th
C.N. 12th
C.N.
Motor -Nucleus Ambiguus Hypo-
glossal...

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Medulla
oblongata
Pons
Midbrain
Inferior
view of the
Brain
Dr. Sherif Fahmy

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Last 4 Cranial Nerves (Anatomy of the Neck)

  1. 1. LAST 4 CRANIAL NERVES (Page 92) Dr. Sherif Fahmy
  2. 2. Deep Origin (Nuclei) of Last 4 cranial nerves 9th C.N. 10th C.N. 11th C.N. 12th C.N. Motor -Nucleus Ambiguus Hypo- glossal nucleus Sensory Spinal nucleus of trigeminal nerve No No Taste Nucleus solitarius No No Para- sympathetic Inf. Salivary (9th ) & dorsal nucleus (10th ) No No -Upper 5 cervical segments Dr. Sherif Fahmy
  3. 3. Medulla oblongata Pons Midbrain Inferior view of the Brain Dr. Sherif Fahmy
  4. 4. 9th & 10th CN 11th CN 12th CN Medulla oblongata Dr. Sherif Fahmy
  5. 5. Parotid gland Carotid sheath Lower 4 cranial ns Styloid process Dr. Sherif Fahmy
  6. 6. Stylopharyngeus m. Glossopharyngeal nerve Dr. Sherif Fahmy
  7. 7. Glossopharyngeal n. Hyoglossus m. Dr. Sherif Fahmy
  8. 8. Superior belly of omohyoid m. Posterior belly of digastric m. Sterno- mastoid m. Spinal accessor y n. Vagus nerve Hypoglossa l n. Descenden s hypoglossi Nerve to thyrohyoid m. Internal jugular vein Ansa cervicalis Dr. Sherif Fahmy
  9. 9. Spinal accessory n. Dr. Sherif Fahmy
  10. 10. Glosso-pharyngeal nerve (9th C.N.) (Page 92) Dr. Sherif Fahmy
  11. 11. Medulla Glosso- pharyngeal n. Jugular foramen Superior ganglion Inferior ganglion Int. jugular vein Int. carotid art. Carotid sinus Ext. carotid art. Middle constrictor m. Hyoglossus m. Post 1/3 of tongue Palatine tonsil Soft palate Course Carotid sheath Styloid process Stylopharyngeus m. Dr. Sherif Fahmy
  12. 12. Glosso- pharyngeal n. Jugular foramen Inferior ganglion Carotid sinus 5- sensory to post. 1/3 of tongue 6- to palatine tonsil 7- to soft palate Branches 1-Tympanic br. Lesser superficial petrosal n. Stylo- phayngeus m. 2-N.to stylo- pharyngeus m. 3- Carotid n. 4- Pharyngeal br. To pharyngeal plexus Dr. Sherif Fahmy
  13. 13. Vagus Nerve (10th CN) (Page 94) Dr. Sherif Fahmy
  14. 14. Medulla Vagus Sup. ganglion Inf. ganglion Carotid sheath Styloid pr. Post. Belly of digastric m. subclavian art. Int. carotid art. Int. jugular vein Course Dr. Sherif Fahmy
  15. 15. Branches 1- Meningeal br. 2- Auricular br. 3- Pharyngeal br. 4- Superior laryngeal br. Internal laryngeal br. External laryngeal br. 5- Superior cardiac 6-Inferior cardiac 7- Recurrent laryngeal n. Dr. Sherif Fahmy
  16. 16. Dr. Sherif Fahmy
  17. 17. Accessory Nerve (11th CN) (Page 96) Dr. Sherif Fahmy
  18. 18. Posterior belly of digastric m. Sterno- mastoid m. Spinal accessor y n. Internal jugular vein Dr. Sherif Fahmy
  19. 19. Spinal accessory n. Dr. Sherif Fahmy
  20. 20. Cranial root Spinal root Vagus nerve Accessory nerve Carotid sheath Styloid process Posterior belly of digastric m. Sterno- mastoid m. Trapezius m. Spinal accessory n. Course & Branches Jugular foramen Dr. Sherif Fahmy
  21. 21. Spinal accessory n. Sternomastoid m. Trapezius m. Dr. Sherif Fahmy
  22. 22. Hypoglossal Nerve (12th CN) (Page 98) Dr. Sherif Fahmy
  23. 23. Superior belly of omohyoid m. Posterior belly of digastric m. Sterno- mastoid m. Hypoglossa l n. Descenden s hypoglossi Nerve to thyrohyoid m. Internal jugular vein Ansa cervicalis Dr. Sherif Fahmy
  24. 24. Hypoglossal n. Br. From C1 Nerve Hypoglossal canal Carotid sheath Styloid process Posterior belly of digastric m Int. jugular vein Descendens cervicalis Ansa cervicalis Descendens hypoglossi N. To thyro- hyoid m. N. To genio- hyoid m. To all muscles of tongue except palato-glossus Course & Branches ICA Medulla Dr. Sherif Fahmy

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