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*  Preauricular sinus and cyst
... dent or dimple located anywhere adjacent to the external ear. Frequency of preauricular sinus differs depending the population ... "Syndromic Ear Anomalies and Renal Ultrasounds". James, William D.; Berger, Timothy G.; et al. (2006). Andrews' Diseases of the ... ISBN 0-7817-9505-2 Michael Hawke Ear Disease Published by PMPH-USA, 2003; page 5. ISBN 1-55009-241-3 Leopardi G1, Chiarella G, ... A preauricular sinus (also known as a congenital auricular fistula, a congenital preauricular fistula, a Geswein hole, an ear ...
*  Round window
The round window is one of the two openings from the middle ear into the inner ear. It is sealed by the secondary tympanic ... This membrane consists of three layers: an external, or mucous, derived from the mucous lining of the tympanic cavity; an ... Some types of ear surgery (now generally abandoned) used to leave the round window open to the outside world and covered over ... It has also recently been used as a site to place middle ear implantable hearing aid transducers. This work has been publicised ...
*  Cholesteatoma
... to epithelial migration and are particularly high risk factors for failure of the self-cleaning mechanism of the external ear. ... Not all middle ear epidermal cysts are congenital, as they can be acquired either by metaplasia of the middle ear mucosa or by ... On initial inspection, an ear canal full of discharge may be all that is visible. Until the doctor has cleaned the ear and ... The removal of the ear canal wall results in: a space, the "mastoid cavity", which is less likely than the original ear canal ...
*  Antitragus
Left human ear External ear. Right auricle.Lateral view. This article incorporates text in the public domain from the 20th ... The antitragus is a feature of mammalian ear anatomy. In humans, it is a small tubercle on the visible part of the ear; the ... The antitragicus muscle, an intrinsic muscle of the ear, arises from the outer part of the antitragus. The antitragus can be ...
*  Antihelix
Left human ear External ear. Right auricle.Lateral view. External ear. Right auricle.Lateral view. External ear. Right auricle. ... The antihelix (anthelix) is a part of the visible ear; the pinna. The antihelix is a curved prominence of cartilage parallel ...
*  Helix (ear)
External ear. Right auricle.Lateral view. External ear. Right auricle.Lateral view. External ear. Right auricle.Lateral view. ...
*  Nile crocodile
Shute, C. & A. Bellairs (2010). "The external ear in Crocodilia". Proceedings of the Zoological Society of London. 124 (4): 741 ... The nostrils, eyes, and ears are situated on the top of the head, so the rest of the body can remain concealed underwater. They ...
*  Transandinomys
The pinna (external ear) is large. On the hindfeet, which are long and narrow, ungual tufts of hairs surround the bases of the ... The mystacial (above the mouth) and superciliary vibrissae both extend to at least the back margin of the ears when laid back ... Both are hosts to various external parasites. They are in no apparent danger of extinction and have been assessed as "Least ... so that the only feature of external morphology that distinguishes the two genera is the length of the vibrissae. Handleyomys ...
*  Orthosuchus
1955), The external ear in Crocodilia. Proceedings of the Zoological Society of London, 124: 741-749. doi:10.1111/j.1469- ... The external skull surface is covered randomly with small pits. The orbits are huge, with a complete dorsal roof made by the ... The ears are protected by earflaps, which prevent water inflow to the otic recess when this animal is in water. The fossil ... The ears are protected by earflaps, which prevent water inflow to the otic recess when this animal is in water. Modern ...
*  Accessory auricle
Ku, PK; Tong, MC; Yue, V (1998). "Polyotia- a rare external ear anomaly". International Journal of Pediatric Otorhinolaryngoly ... The second ear appears as a mirror image folded forward and lying on the posterior cheek.[citation needed] These structures are ... a developmental anomaly resulting from the persistence of a structure which variably recapitulates the normal external ear. The ... The several components or degrees of development range from an ear tag, preauricular appendage, preauricular tag, or accessory ...
*  Priangan sheep
Rams are horned and ewes are polled (hornless). Individuals often lack external ears. The rams are selected for size, horn size ...
*  Indian chameleon
No tympanum or external ear is present. The body is compressed, and the neck is very short. The vertebrae are procoelian; ...
*  Darwin's tubercle
Singh, P.; Purkait, R. (2009). "Observations of external ear-an Indian study". Homo-Journal of Comparative Human Biology (60): ... Bean, R.B. (1915). "Some characteristics of the external ear of American Whites, American Indians, American Negroes, Alaskan ... The trait can potentially be bilateral, meaning present on both ears, or unilateral, where it is only present on one ear. There ... Darwin's tubercle (or auricular tubercle) is a congenital ear condition which often presents as a thickening on the helix at ...
*  Frog
They do not have external ears; the eardrums (tympanic membranes) are directly exposed or may be covered by a layer of skin and ... The eardrum, middle ear, and inner ear are developed. The skin becomes thicker and tougher, the lateral line system is lost, ... The middle ear contains semicircular canals which help control balance and orientation. In the inner ear, the auditory hair ... A noise causes the tympanum to vibrate and the sound is transmitted to the middle and inner ear. ...
*  Ceruminous adenoma
... are rare tumors, accounting for less than 1% of all external ear tumors. The patients will present with a ... Other tumors which need to be excluded include a neuroendocrine adenoma of the middle ear (middle ear adenoma), paraganglioma, ... "Primary pleomorphic adenoma of the external ear canal. Report of a case and literature review". Am J Otolaryngol. 29 (2): 142-6 ... These glands are found within the outer one third to one half of the external auditory canal, more common along the posterior ...
*  Staphylococcus auricularis
nov.: an Inhabitant of the Human External Ear". International Journal of Systematic Bacteriology. 33 (1): 9-14. doi:10.1099/ ... This species was originally isolated from the exterior of a human ear and is weakly hemolytic. Because it commonly exists on ...
*  Pinniped
These animals lack external ear flaps and are incapable of turning their hind-flippers forward, which makes them more ... Otariids have visible external ears, while phocids and walruses lack these. Pinnipeds have well-developed senses-their eyesight ... In addition, the walrus lacks external ear flaps. Walruses have pterygoid bones that are broad and thick, frontal bones that ... The middle ear contains sinuses that probably fill with blood during dives, preventing middle ear squeeze. The heart of a seal ...
*  Ambulocetus
It also lacked external ears.[citation needed] Its skull had a long snout and eyes facing sideways (they faced upward in ...
*  Golden mole
The external ears are just tiny openings. In particular, golden moles bear a remarkable resemblance to the marsupial moles of ... Note below however, the observations on the malleus in the middle ear. The species range in size from about 8 to about 20 cm. ... Specialization in the ear region of moles (mammalia)". Journal of Morphology. 276 (8): 900-914. doi:10.1002/jmor.20391. ISSN ... Some species also have hypertrophied middle ear ossicles, in particular the malleus, which apparently is adapted towards the ...
*  Giant otter shrew
It has small eyes and external ears. Its fur consists of a dense undercoat and coarse guard hairs. It possesses counter-shading ...
*  Tasmanian devil
There are no external ears or openings. Unusually, the gender can be determined at birth, with an external scrotum present. ... At 15 days, the external parts of the ear are visible, although these are attached to the head and do not open out until the ... The ear begins blackening after around 40 days, when it is less than 1 cm (0.39 in) long, and by the time the ear becomes erect ... The male has external testes in a pouch-like structure formed by lateral ventrocrural folds of the abdomen, which partially ...
*  Walrus
Also like phocids, it lacks external ears. The extraocular muscles of the walrus are well-developed. This and its lack of ... The walrus's body shape shares features with both sea lions (eared seals: Otariidae) and seals (true seals: Phocidae). As with ... and eared seals (Otariidae). While there has been some debate as to whether all three lineages are monophyletic, i.e. descended ...
*  Camas pocket gopher
The external ear is a thickened rim of tissue. During the summer, the gopher's coat is short and coarse; winter pelage is ... The external auditory meatus is broad and open, although the auditory bullae are confined. The dentition of the camas pocket ... Like other gophers, it has small eyes and ears and a nearly hairless tail. Its shoulders are broader than its hips. It is ... There are often patches of white on the chin, throat and around the anus, and it has blackish ear and nose markings. ...
*  Avulsion injury
The ear can also be reconstructed with cartilage and skin grafts or an external ear prosthesis can be made by an ... Saad Ibrahim, S. M., Zidan, A., & Madani, S. (2008). Totally avulsed ear: New technique of immediate ear reconstruction. ... Microvascular surgery in avulsive trauma to the external ear. Clinics in Plastic Surgery, 5(3), 423-426. Fleming, J. P., & ... The ear is particularly vulnerable to avulsion injuries because of its position on the side of the head. The most common cause ...
*  Verreaux's eagle-owl
Kelso, L. (1940). Variation of the external ear-opening in the Strigidae. The Wilson Bulletin, 24-29. Andersson, C. J. (1872). ... The ear tufts are blunter and smaller relative to those of other African eagle-owls. The ear-tufts of this species being ... The Verreaux's eagle-owl is thought to be a threat to even larger carnivores, including the 4,150 g (9.15 lb) bat-eared fox ( ... Clark Jr, H. O. (2005). "Otocyon megalotis". Mammalian Species, 1-5. Bat-eared fox, Otocyon megalotis, J.A.J. Nel and B. Maas, ...
*  Earmuffs
... to cover the external ears. This article primarily focuses on the earmuffs for hearing protection. The difference between ... Muffs should make a good seal against the head and should fully cover the outer ear without pushing against the ears. ... "Noise Cancelling Ear Muffs , Howard Leight". Howard Leight. Retrieved 2016-10-28. Leight, Howard. "Noise Cancelling Ear Muffs ... Sharp, David (December 5, 2015). "Ear, Ear: Maine Town Hails Earmuff's Inventor". Chicago Tribune. p. 3. Acton, W. Ian (1987 ...
*  Burt Brent
Brent, B.: "Surgical Treatment of Congenital Disorders of the External Ear." In Serafin, D., and Georgiade, N. G. (Eds.), ... Additional publications: 1. Tanzer, R.C.: "Total Reconstruction of the External Ear." Plastic & Reconstructive Surgery, 23:1, ... Burt Brent Constructs Ears for the Earless". People. Retrieved 2009-08-02. Ear Reconstruction Microtia and Atresia The Almanac ... In Brent, B. (Guest Ed.) Pediatric Ear Disease, in Pediatric Annals, 28: 374, 1999. 56. Brent, B.: Technical advances in ear ...