Search results
Results From The WOW.Com Content Network
The tragus is a key feature in many bat species. As a piece of skin in front of the ear canal, it plays an important role in directing sounds into the ear for prey location and navigation via echolocation. [6] Because the tragus tends to be prominent in bats, it is an important feature in identifying bat species. [7]
A labyrinthine fistula is an abnormal opening in the inner ear. This can result in leakage of the perilymph into the middle ear. [ 1 ] This includes specifically a perilymph fistula ( PLF ), an abnormal connection between the fluid of the inner ear and the air-filled middle ear .
An oroantral fistula (OAF) is an epithelialized oroantral communication (OAC), which refers to an abnormal connection between the oral cavity and the antrum. [1] The creation of an OAC is most commonly due to the extraction of a maxillary tooth (typically a maxillary first molar ) which is closely related to the antral floor.
Congenital auricular fistula, Congenital preauricular fistula, Ear pit, [1]: 782 ...
Damage to the tissue surrounding the piercing can also cause migration. A damaged piercing, much like a fresh piercing, must heal the fistula that it passes through, and the jewelry may start migrating in the direction of the wound, further damaging the fistula as it moves.
Frank's sign is a diagonal crease in the ear lobe extending from the tragus across the lobule to the rear edge of the auricle. [1] The sign is named after Sanders T. Frank. [1] It has been hypothesised that Frank's sign is indicative of cardiovascular disease [2] [3] and/or diabetes. [4]
Tracheoinnominate fistula (TIAF or TIF) is an abnormal connection between the innominate artery (brachiocephalic trunk or brachiocephalic artery) and the trachea. A TIF is a rare but life-threatening iatrogenic injury, usually the sequela of a tracheotomy .
The fistula can communicate with the mouth (usually causing no symptoms), the paranasal sinuses (giving rhinorrhea) [1] or the facial skin (causing saliva to drain onto the skin). The usual cause is trauma, however salivary fistula can occur as a complication of surgery, or if the duct becomes obstructed with a calculus. [1]