otic capsule

otic capsule
otic capsule n a mesenchymal shell around the auditory vesicle that becomes cartilaginous and bony and develops into the petrous portion of the sphenoid bone

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the cup-shaped cartilage in the head of an embryo that later develops into the bony labyrinth of the ear.

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the skeletal element enclosing the mechanism of the internal ear. In the human embryo, it develops as cartilage at various ossification centers and becomes completely bony and unified at about the twenty-third week of fetal life.

Medical dictionary. 2011.

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Look at other dictionaries:

  • otic capsule — the skeleton surrounding the inner ear or otic vesicle, composed of the prootic, opisthotic, exoccipital, and supraoccipital …   Dictionary of ichthyology

  • otic capsule — the cup shaped cartilage in the head of an embryo that later develops into the bony labyrinth of the ear …   The new mediacal dictionary

  • Capsule — has many meanings in medicine including the following: {{}}In medicine, a membranous structure that envelops an organ, a joint, tumor, or any other part of the body. It is usually made up of dense collagen containing connective tissue. In… …   Medical dictionary

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  • periotic capsule — the tissue surrounding the otic sac in the embryo …   Medical dictionary

  • auditory capsule — noun also auditory vesicle : otic vesicle …   Useful english dictionary

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  • sound reception — Introduction       response of an organism s aural mechanism, the ear, to a specific form of energy change, or sound waves. Sound waves can be transmitted through gases, liquids, or solids, but the hearing function of each species is particularly …   Universalium

  • List of anatomical topics — This page aims to list articles related to anatomy. This list is not necessarily complete or up to date if you see an article that should be here but isn t (or one that shouldn t be here but is), please update the page accordingly. NOTOC A… …   Wikipedia

  • epiotic — One of the components of the otic capsule of some vertebrates; in the mammal the petrosal or petrous temporal bone incorporates the various otic elements seen in lower vertebrates. [epi + G. ous, ear] * * * epi·otic .ep ē ät ik adj …   Medical dictionary

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