Biomaterial Database

Applied comparative anatomy of the avian middle ear. 1994

R Mills

Department of Otolaryngology, Ninewells Hospital, University of Dundee, Scotland, UK.

The anatomy of the middle ear has been studied in nine species of birds, with particular reference to the structure of the ossicle and its relationship to the tympanic membrane. The morphology of the avian middle ear has been compared to that of the reconstructed human middle ear. Drum to stapes foot plate assemblies created during ossiculoplasty operations differ from the pattern found in the avian middle ear in a number of important respects and this may help to explain why they are often unsuccessful. It is not technically feasible to reproduce the avian middle ear pattern exactly in the human middle ear and developments in reconstructive technique should therefore be directed towards reproducing the three ossicle pattern of the mammalian ear.

UI	MeSH Term	Description	Entries
D009998	Ossicular Prosthesis	An implant used to replace one or more of the ear ossicles. They are usually made of plastic, Gelfoam, ceramic, or stainless steel.	Implant, Middle Ear,Middle Ear Implant,Ossicular Replacement Prosthesis,PORP,TORP,Implant, Ossicular Replacement,Ossicular Replacement Implant,Ossicular Replacement Prostheses,Prostheses, Ossicular Replacement,Prosthesis, Ossicular Replacement,Replacement Implant, Ossicular,Replacement Prostheses, Ossicular,Replacement Prosthesis, Ossicular,Ear Implant, Middle,Ear Implants, Middle,Implants, Middle Ear,Implants, Ossicular Replacement,Middle Ear Implants,Ossicular Prostheses,Ossicular Replacement Implants,Ossicular Replacement Prosthese,Prostheses, Ossicular,Prosthesis, Ossicular,Replacement Implants, Ossicular
D004429	Ear Ossicles	A mobile chain of three small bones (INCUS; MALLEUS; STAPES) in the TYMPANIC CAVITY between the TYMPANIC MEMBRANE and the oval window on the wall of INNER EAR. Sound waves are converted to vibration by the tympanic membrane then transmitted via these ear ossicles to the inner ear.	Auditory Ossicles,Auditory Ossicle,Ear Ossicle,Ossicle, Auditory,Ossicle, Ear,Ossicles, Auditory,Ossicles, Ear
D004432	Ear, Middle	The space and structures directly internal to the TYMPANIC MEMBRANE and external to the inner ear (LABYRINTH). Its major components include the AUDITORY OSSICLES and the EUSTACHIAN TUBE that connects the cavity of middle ear (tympanic cavity) to the upper part of the throat.	Tympanic Cavity,Tympanum,Middle Ear,Cavities, Tympanic,Cavity, Tympanic,Ears, Middle,Middle Ears,Tympanic Cavities,Tympanums
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000717	Anatomy, Comparative	The comparative study of animal structure with regard to homologous organs or parts. (Stedman, 25th ed)	Comparative Anatomy,Anatomies, Comparative,Comparative Anatomies
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D001717	Birds	Warm-blooded VERTEBRATES possessing FEATHERS and belonging to the class Aves.	Aves,Bird
D014432	Tympanic Membrane	An oval semitransparent membrane separating the external EAR CANAL from the tympanic cavity (EAR, MIDDLE). It contains three layers: the skin of the external ear canal; the core of radially and circularly arranged collagen fibers; and the MUCOSA of the middle ear.	Eardrum,Eardrums,Membrane, Tympanic,Membranes, Tympanic,Tympanic Membranes