Klw

Tubotympanic recess

Auditory ossicles embedded in loose mesenchyme

Wall of

Auditory ossicles embedded in loose mesenchyme

Wall of

Tubotympanic Recess

Auditory tube tube

External auditory meatus

Meatal plug

Primitive tympanic cavity

Auditory

External auditory meatus

Meatal plug tube tube

Primitive tympanic cavity

Figure 16.7 A. Transverse section of a 7-week embryo in the region of the rhombencephalon, showing the tubotympanic recess, the first pharyngeal cleft, and mesenchymal condensation, foreshadowing development of the ossicles. B. Middle ear showing the cartilaginous precursors of the auditory ossicles. Thin yellow line in mesenchyme indicates future expansion of the primitive tympanic cavity. Note the meatal plug extending from the primitive auditory meatus to the tympanic cavity.

Tympanic Cavity
Figure 16.8 Ear showing the external auditory meatus, the middle ear with its ossicles, and the inner ear.

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Responses

  • doreen
    Is the most internal of the ear ossicles?
    8 years ago
  • luukas liukko
    Where are the auditory ossicles embedded?
    8 years ago

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