loading...| Preferred Name | tympanic membrane | |
| Synonyms |
tympanum Rivinus' membrane lateral wall of tympanic cavity paries membranaceus cavi tympani membranous wall of tympanic cavity ear drum eardrum myrinx |
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| Definitions |
A thin membrane that separates the external ear from the middle ear, consisting of two epithelia (one part of the the external accoustic meatus epithelium, the other part of the tympanic cavity epithelium) with a fibrous layer between them. Its function is to transmit sound from the air to the ossicles inside the middle ear. The malleus bone bridges the gap between the eardrum and the other ossicles. Rupture or perforation of the eardrum can lead to conductive hearing loss. [WP,unvetted]. |
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| ID |
http://purl.obolibrary.org/obo/UBERON_0002364 |
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| adjacent to | ||
| contributes to morphology of | ||
| database_cross_reference |
EMAPA:19062 Wikipedia:Tympanic_membrane UMLS:C0041445 VHOG:0001146 SCTID:181180005 XAO:0000212 MESH:D014432 NCIT:C12502 FMA:9595 GAID:870 MA:0000257 |
|
| definition |
A thin membrane that separates the external ear from the middle ear, consisting of two epithelia (one part of the the external accoustic meatus epithelium, the other part of the tympanic cavity epithelium) with a fibrous layer between them. Its function is to transmit sound from the air to the ossicles inside the middle ear. The malleus bone bridges the gap between the eardrum and the other ossicles. Rupture or perforation of the eardrum can lead to conductive hearing loss. [WP,unvetted]. |
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| development_notes |
The tympanic membrane (TM) has three layers, two epithelia provided by the external acoustic meatus (EAM) and the MEC, derived respectively from the first pharyngeal cleft and pouch, and a mesenchymally derived fibrous stratum |
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| develops_from | ||
| external_definition |
The thin membrane which closes externally the cavity of the middle ear and is deeply sited at the bottom of the external auditory meatus. [Dorian_AF, Elsevier's_encyclopaedic_dictionary_of_medicine, Part_B:_Anatomy_(1988)_Amsterdam_etc.:_Elsevier][VHOG] |
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| external_ontology_notes |
most AOs consider this part of the middle ear, so we go with this and place it in the middle ear as a border to the external, although it could be considered to overlap the external ear in that it has an EAM layer as part - for this reason we do not consider middle and external ear to be spatially disjoint. |
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| has part |
http://purl.obolibrary.org/obo/UBERON_0010069 |
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| has_exact_synonym |
Rivinus' membrane lateral wall of tympanic cavity paries membranaceus cavi tympani membranous wall of tympanic cavity ear drum eardrum myrinx |
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| has_obo_namespace |
uberon |
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| has_related_synonym |
tympanum |
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| homology_notes |
In particular, a tympanic membrane was not present in the earliest tetrapods (...). An ear utilizing a tympanic membrane evolved independently at least three times in tetrapods: (1) in the lineage that leads to anurans (frogs), (2) in the line of evolution to turtles and diapsids, and (3) in the late synapsid lineage that gave rise to mammals.[well established][VHOG] |
|
| id |
UBERON:0002364 |
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| in_subset |
http://purl.obolibrary.org/obo/uberon/core#organ_slim |
|
| label |
tympanic membrane |
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| never_in_taxon | ||
| notation |
UBERON:0002364 |
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| overlaps |
http://purl.obolibrary.org/obo/UBERON_0001691 http://purl.obolibrary.org/obo/UBERON_0001352 http://purl.obolibrary.org/obo/UBERON_0010069 http://purl.obolibrary.org/obo/UBERON_0005042 |
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| part_of | ||
| prefLabel |
tympanic membrane |
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| treeView | ||
| subClassOf |