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by Intro to Audiology CSD0 views·Updated Mar 20, 2021
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  1. Let's talk about the anatomy of the year.
  2. The outer ear is the area that most folks think
  3. of when they think of the ear.
  4. The Penha is the most noticeable portion of this outer
  5. ear. It's a cartilaginous funnel that contains many intricate folds
  6. that funnels sound from the environment into the auditory canal.
  7. The concha is at the mouth of the auditory canal
  8. and further helps funnel that sound into the canal.
  9. The canal itself extends through bone and through tissue of
  10. the size of the head.
  11. It contains sebaceous glands in portions of it that secretes
  12. serotonin, which is Iraq's.
  13. It ends at the Tim panic membranes.
  14. The symphonic membrane itself represents the border between the outer
  15. and middle ear.
  16. The symphonic membrane is a fibrous membrane composed of three
  17. separate layers, the inner, most of which is a layer
  18. of mucus that coats the entire middle ear.
  19. The middle ear contains the obstacles, which is the smallest
  20. bones in the human body, and these obstacles help transducer
  21. sound from being sound energy and the environment to becoming
  22. mechanical energy.
  23. The team Partick membrane vibrates the Milius and that that
  24. connects to the Pincus and finally, that connects to the
  25. stables, which sits in the oval window of the cochlea.
  26. The EU's stinking tube is part of the middle ear
  27. that connects to the nasopharynx and helps to equalize pressure
  28. between the middle ear and the outer ear.
  29. Yeah, the inner ear begins at that oval window, where
  30. the stapes moves in, sort of a rocking motion to
  31. stimulate parallel, which is a fluid inside the cochlea.
  32. Other than the cochlea, we have the vestibular mechanism of
  33. the body, which contains three semicircular canals as well as
  34. the, uh, trickle of the sack You'll.
  35. This provides balanced information for the head.
  36. Looking further at the cochlea, we can peek inside.
  37. Here we see that we've got the scale of vestibular,
  38. which is the upper chamber, the upper tube of the
  39. cochlea and the scale of tympani, which is lower in
  40. the middle.
  41. We have the scale of media which contains the organ
  42. of Corti, which is the organ of hearing the cochlear
  43. nerve branches out to contain hair cells, which are cilia,
  44. and the top with stereo cilia, which are the actual
  45. sensory organs that allow us to transducers that mechanical energy,
  46. which is now fluid, parallel moving along the vascular membrane
  47. into neural energy.
  48. Those stereo cilia, um, insert through the vascular membrane, and
  49. it is stimulation of that vascular membrane that allows us
  50. to transducer that sound.
  51. So now that we know a little bit more about
  52. the anatomy of the year, we're going to move on
  53. to Elliot Lauren, who are going to talk about disorders
  54. of the outer middle and inner here.