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The capsule surrounding the inner ear mechanism. [ http://www.biology-online.org/dictionary/Otic_capsule ]

Synonyms: otic capsule element otic capsule endochondral element otic capsule

This is just here as a test because I lose it

Term information

axiom lost from external ontology

relationship loss: part_of otic and occipital (AAO:0000993)[AAO]

relationship loss: part_of occipito-petrosal (AAO:0010831)[AAO]

editor note

developmental relationships need to be checked

external definition

Skeletal elements surrounding the membranous labyrinth of the inner ear. Sensory capsules anterolateral to and confluent with occipital arch.[AAO]

The cartilage capsule surrounding the inner ear mechanism; in the embryos of higher vertebrates, it is cartilaginous at first but later becomes bony. [Biology_online][VHOG]

has broad synonym

otic capsule skeletal element

has related synonym

otic region


periotic capsule

auditory capsule

homology notes

Otic capsules develop around the parts of the ear that lie within the chondrocranium. This part of the ear, known as the inner ear, is composed of the semicircular ducts and associated sacs that contain the receptive cells for equilibrium and hearing (reference 1); (...) considerations have led to our rethinking issues related to the origin of several aspects of vertebrate hearing, and to the view that many basic auditory functions evolved very early in vertebrate history, and that the functions observed in more `advanced' vertebrates, such as birds and mammals, are frequently modifications of themes first encountered in fishes, and perhaps even more ancestral animals.[well established][VHOG]



taxon notes

in elasmobranchs, it remains cartilaginous in the adult; in the embryos of higher vertebrates, it is cartilaginous at first but later becomes bony (at approximately 23 weeks in humans)