Anatomy final middle ear.txt

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Author:
kdalbor
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251897
Filename:
Anatomy final middle ear.txt
Updated:
2013-12-08 23:42:14
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middle ear
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anatomy
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  1. ____ is a cavity inside the temporal bone
    Middle ear
  2. the middle ear is connected to the pharynx through the ____
    Eustachian tube
  3. ___ opens to drain the middle ear cavity
    Eustachian tube
  4. __ opens in the middle ear to equalize air pressure to atmospheric
    Eustachian tube
  5. ___are the smallest bones
    Ossicles
  6. ___ transfer energy from the TM to the oval window
    Ossicles
  7. __ amplifies energy to inner ear
    Ossicles
  8. The largest ossicle that attaches to the TM
    Malleus
  9. The largest part of the malleus that attaches to the incus
    Head
  10. The 3 ossicles
    • Malleus
    • Incus
    • Stapes
  11. ___ is a long process, separated from the head by a thin neck that connects to the TM.
    Manubrium
  12. __ is shaped like an anvil
    Incus
  13. __ provides the intermediate communicating link of the ossicle chain
    Incus
  14. The body of the incus articulates with the head of the malleus by means of the ___ in such a way that the ___ process of the incus is nearly parallel with the manubrium of the malleus.
    • Malleolar facet
    • Long
  15. The short process projects___ and the long process bends____ forming the ___ process
    • Posteriorly
    • Medially
    • Lenticular
  16. The ___ process articulates with the stapes
    Lenticular
  17. __&__ move as a unit upon movement of the TM
    • Malleus
    • Incus
  18. The 3rd bone of the ossicle chain
    It is also known as "stirrup"
    Stapes
  19. The __ of the stapes articulates with the lenticular process of the____
    • Head (caput)
    • Incus
  20. The ___ of the stapes covers the oval window of the temporal bone
    Footplate/base
  21. The smallest bone of the ossicle chain
    Stapes
  22. The ___ muscles are the smallest of the human body and attach to ossicles
    Tympanic muscles
  23. This muscle is embedded in the bone of the posterior wall of the middle ear
    Stapedius
  24. The contraction of the ___ muscle rotates the footplate of the stapes posteriorly, thereby stiffening the ossicular chain
    Stapedius
  25. The 2 tympanic muscles
    • Stapedius
    • Tensor tympani
  26. The contraction of this muscle pulls the malleus anteromedially, thereby reducing the range of movement of the TM by placing indirect tension on it.
    Tensor tympani
  27. The ___ enters the middle ear space superior to the eustachian tube as a tendon
    Tensor tympani
  28. The___ inserts into the manubrium and the malleus
    Tensor tympani
  29. Only the tendon of the___ is found in the middle ear space; the muscle itself is found in the bone
    Tensor tympani
  30. Contraction of ___ muscles reduces the strength of the signal reaching the cochlea, potentially protecting it from damage due to high signal intensity.
    • Stapedius
    • Tensor tympani
  31. Also known as the stapedial reflex
    Acoustic reflex
  32. __ is triggered by loud sounds usually > 85
    Acoustic reflex
  33. When the stapedius and tensor tympani stiffen the ossicle chain and reduce movement into oval window
    Acoustic reflex
  34. Protects inner ear but better at lower than higher frequencies
    Acoustic reflex
  35. The footplate of the stapes is attached here
    Oval window
  36. __ is sealed by the secondary TM which marks the entrance into the scala tympani of the cochlea
    Round window
  37. __ is between the oval and round window
    Promontory
  38. ___ is a bug,e created by the basal turn of the cochlea
    Promontory

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