Middle ear ossicles

There are three ossicles (from lateral to medial):

Their role is to mechanically amplify the vibrations of the tympanic membrane and transmit them to the cochlea where they can be interpreted as sound. They are located in the middle ear cavity and articulate with each other via tiny synovial joints.

Interestingly, they are the only bones in the body that do not grow after birth.


Head and neck anatomy
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Article Information

rID: 1789
System: Head & Neck
Section: Anatomy
Tags: stub, refs
Synonyms or Alternate Spellings:
  • Ossicular chain

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    Figure 1: ossicles
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    Figure 2: stapes
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    Figure 3: incus
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    Figure 4: malleus
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    Figure 5: incus - annotated CT
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    Figure 6: stapes - annotated CT
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    Figure 7: malleus - annotated CT
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