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The Ear (Anatomy of the Neck)

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The Ear (Anatomy of the Neck)

  1. 1. THE EAR (Page 154) Dr.Sherif Fahmy
  2. 2. A- External Ear Dr.Sherif Fahmy
  3. 3. Dr.Sherif Fahmy
  4. 4. Auricle Lobule External auditory meatus Ear drum Dr.Sherif Fahmy
  5. 5. Auricle Lobule of ear External auditory meatus Ear drum Dr.Sherif Fahmy
  6. 6. Tympanic memebrane (Ear drum) Dr.Sherif Fahmy
  7. 7. Tympanic membrane External auditory meatus Malleus Middle earDr.Sherif Fahmy
  8. 8. Pars tensa Pars flaccida Cone of light Handle of malleus Dr.Sherif Fahmy
  9. 9. Tympanic membrane Malleus Middle ear Umbo Handle of malleus Dr.Sherif Fahmy
  10. 10. Blood & Nerve Supply of Tympanic Membrane • 1- Nerve Supply: • A- Outer surface: is supplied by auriculo- temporal and auricular branch of vagus. • B- Inner surface: tympanic plexus. • 2- Blood Supply: • 1- Outer surface: deep auricular artery. • 2- Inner surface: from anterior tympanic artery. Dr.Sherif Fahmy
  11. 11. Dr.Sherif Fahmy
  12. 12. Outer aspect of tymoanic membrane Handle of malleus Cone of light Dr.Sherif Fahmy
  13. 13. Otitis media Dr.Sherif Fahmy
  14. 14. B- Middle Ear (Page 156) Dr.Sherif Fahmy
  15. 15. Epitympanic recess Tympanic cavity Parts of middle ear cavity Dr.Sherif Fahmy
  16. 16. Roof Floor Anterior wall Posterior wall Medial wall Walls of middle ear Dr.Sherif Fahmy
  17. 17. Tegmen tympani Dr.Sherif Fahmy
  18. 18. Roof Tegman tympani Floor Int. jugular vein Tympanic br. Of Glosso- pharyngeal n. Roof & Floor Dr.Sherif Fahmy
  19. 19. Anterior wall Posterior wall Promontory Tympanic plexus Oval window Round window Br. From sympathetic plexus around I.C.A. Tympanic br. Of 9th CN Canal for facial N. Medial wall Dr.Sherif Fahmy
  20. 20. Roof Floor Anterior wall Posterior wall Tensor tympani m. Auditory tube Internal carotid art. Sympathetic plexus Anterior wall Dr.Sherif Fahmy
  21. 21. Aditus ad antrum Pyramid Facial canal Chorda tympani Posterior wall Dr.Sherif Fahmy
  22. 22. External auditory meatus Ear drum Lateral wall Dr.Sherif Fahmy
  23. 23. Contents of middle ear 1- Ossicles: Malleus, incus and stapes. 2- Muscles: Tensor tympani & Stapedius. 3- Nerves: Tympanic plexus and chorda tympani. 4- Blood vessels: Tympanic arteries. Dr.Sherif Fahmy
  24. 24. Malleus Middle ear Incus Stapes Ossicles Dr.Sherif Fahmy
  25. 25. Malleus Incus Stapes Ossicles Head Handle Body Long process Head Neck Limbs Foot plate Short process Anterior process Dr.Sherif Fahmy
  26. 26. Pharyngo-tympanic tube Dr.Sherif Fahmy
  27. 27. Middle ear Lateral wall of naso- pharynx Pharyngo- tympanic tube Dr.Sherif Fahmy
  28. 28. Dr.Sherif Fahmy
  29. 29. Opening of pharyngeotympanic tube Dr.Sherif Fahmy
  30. 30. Inner Ear (Page 160) Dr.Sherif Fahmy
  31. 31. Internal acoustic meatus Dr.Sherif Fahmy
  32. 32. Petrous Semicircular canals Vestibule Cochlea Bony labyrinith Dr.Sherif Fahmy
  33. 33. saccule Utricle Cochlear duct Semicircular ducts Endolymphatic duct Membranous labrynith Dr.Sherif Fahmy
  34. 34. Vestibulo-cochlear Nerve (Page 160) Dr.Sherif Fahmy
  35. 35. Vestibular nerve Cochlear nerve Internal auditory meatus Vestibulo- cochlear nerve Dr.Sherif Fahmy
  36. 36. Vestibular ganglia Vestibular nerve Spiral ganglia Cochlear nerve Vestibulo- cochlear nerve Internal auditory meatus Ponto- cerebellar angle Dr.Sherif Fahmy
  37. 37. Transmission of sound Tympanic membrane Malleus Incus Stapes Oval window Round window closed with 2dry tympanic membrane Dr.Sherif Fahmy
  38. 38. Spiral gangliom Dr.Sherif Fahmy
  39. 39. Applied Anatomy 1- Otitis media. 2- Intracranial injury of facial n. -At internal auditory meatus. -At medial wall of middle ear. 3- High tone deafness. Dr.Sherif Fahmy

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