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internal ear
internal earn. See inner ear.internal ear n (Anatomy) the part of the ear that consists of the cochlea, vestibule, and semicircular canals. Also called: inner ear or labyrinth in′ner ear′
n. the inner, liquid-filled, membranous portion of the ear, involved in hearing and balance. [1920–25] Thesaurus| Noun | 1. |  internal ear - a complex system of interconnecting cavities; concerned with hearing and equilibriuminner ear, labyrinthneuroepithelium - epithelium associated with special sense organs and containing sensory nerve endingssense organ, sensory receptor, receptor - an organ having nerve endings (in the skin or viscera or eye or ear or nose or mouth) that respond to stimulationauditory apparatus - all of the components of the organ of hearing including the outer and middle and inner earsmembranous labyrinth - the sensory structures of the inner ear including the labyrinthine receptors and the cochlea; contained within the bony labyrinthbony labyrinth, osseous labyrinth - cavity in the petrous part of the temporal bone that contains the membranous labyrinthendolymph - the bodily fluid that fills the membranous labyrinth of the inner earperilymph - the bodily fluid that fills the space between the bony labyrinth and the membranous labyrinth of the inner earsemicircular canal - one of three tube loops filled with fluid and in planes nearly at right angles with one another; concerned with equilibriumcochlea - the snail-shaped tube (in the inner ear coiled around the modiolus) where sound vibrations are converted into nerve impulses by the organ of Cortiartery of the labyrinth, internal auditory artery, labyrinthine artery - an artery that is a branch of the basilar artery that supplies the labyrinthinternal auditory vein, labyrinthine vein - veins that drain the inner ear |
internal ear
internal ear[in′tərn·əl ′ir] (anatomy) inner ear internal ear
internal earn. See inner ear.lab·y·rinth (labi-rinth) [TA] 1. The internal or inner ear, composed of the semicircular ducts, vestibule, and cochlea. 2. Any group of communicating cavities, as in each lateral mass of the ethmoid bone. 3. A group of communicating culture tubes used for separating motile from nonmotile microorganisms.
EAR Abbreviation for estimated average requirement.
ear (ēr) [TA] The organ of hearing: composed of the external ear, which includes the auricle and the external acoustic, or auditory, meatus; the middle ear, or the tympanic cavity with its ossicles; and the internal ear or inner ear, or labyrinth, which includes the semicircular canals, vestibule, and cochlea.
See also: auricle
Synonym(s): auris [TA] . ear (er)  STRUCTURE OF THE EARThe organ of hearing and equilibrium. It consists of outer, middle, and inner portions, and is innervated by the eighth cranial nerve. See: illustrationThe pathway of hearing is as follows: the auricle funnels sound waves from the environment through the external auditory canal to the tympanic membrane, which makes this thin epithelial structure vibrate. The vibrations are transmitted to the auditory ossicles and then to the perilymph and endolymph. The receptors are part of the organ of Corti and generate impulses transmitted by the cochlear branch of the eighth cranial nerve to the spiral ganglion and auditory tracts of the brain. The auditory areas are in the temporal lobes. The healthy human ear responds to a variety of sounds, with frequencies ranging from about 20 to 20,000 Hz. It is most sensitive, however, to sounds whose frequencies fall in the 1500- to 3000-Hz range, the frequency range of most human speech. See: hearing The receptors for equilibrium are in the utricle, saccule, and semicircular ducts, which are innervated by the vestibular branch of the eighth cranial nerve. Impulses from the utricle and saccule provide information about the position of the head, those from the semicircular ducts about the speed and direction of three-dimensional movement. Blainvilleear See: Blainville earCagot earAn ear without a lower lobe.cauliflower earA colloquial term for a thickening of the external ear resulting from trauma. It is commonly seen in boxers. Plastic surgery may restore the ear to a normal shape. darwinian ear See: darwinian earexternal earThe portion of the ear consisting of the auricle and external auditory canal, and separated from the middle ear by the tympanic membrane or eardrum. Synonym: auris externa; outer earforeign bodies in earObjects that enter the ear accidentally or are inserted deliberately. These are usually insects, pebbles, beans or peas, cotton swabs, or coins. SymptomsForeign objects cause pain, ringing, or buzzing in the ear. A live insect usually causes a noise. TreatmentWater must not introduced if any vegetable matter is in the ear because the water may push the foreign body further into the ear or cause the matter to swell and become firmly embedded. To remove insects from the ear, a few drops of lidocaine should be instilled. Inorganic foreign bodies can be removed with small forceps by a health care provider. glue earThe chronic accumulation of a viscous exudate in the middle ear, occurring mostly in children between 5 and 8. It causes deafness, which can be treated by removal of the exudate.  STRUCTURE OF THE INNER EARinner earThe portion of the ear consisting of the cochlea, the vestibule, and the bony semicircular canals, which contain the receptors for static and dynamic equilibrium. The receptors are innervated by the vestibulocochlear nerve. Synonym: auris interna; Internal ear See: illustrationinternal earInner ear.lop earA cosmetic deformity of the earlobe in which the upper portion of the earlobe bows out laterally from the head. middle earThe air-filled expansion of the auditory tube separating the external auditory canal from the inner ear. Sound is transmitted through the middle ear as vibrations along a chain of three tiny bones, the auditory ossicles. Synonym: tympanic cavity See: eardrum; tympanumMozart ear See: Mozart earnerve supply of earExternal: The branches of the facial, vagus, and mandibular nerves and the nerves from the cervical plexus. Middle: The tympanic plexus and the branches of the mandibular, vagus, and facial nerves. Internal:The vestibulocochlear nerve (eighth cranial).outer earExternal ear.pierced earAn earlobe that has been pierced with a needle so that a permanent channel will remain, permitting the wearing of an earring attached to the ear by a connector that passes through the channel.surfer's earThe formation of an exostosis in the external auditory canal of surfers, esp. those who habitually surf in colder waters. swimmer's earA type of external otitis seen in swimmers, usually during the summer. It is typically caused by Staphylococcus aureus or Pseudomonas aeruginosa and is treated with a suspension of neomycin, polymyxin B sulfate, and hydrocortisone. EAR Abbreviation for estimated average requirement.
ear (ēr) [TA] Organ of hearing and equilibrium, composed of external ear,, consisting of auricle, external acoustic meatus, and tympanic membrane; middle ear,, or tympanic cavity, with its auditory ossicles and associated muscles; and internal ear,, the vestibulocochlear organ, which includes the bony labyrinth (of semicircular canals, vestibule, and cochlea), and vestibular and cochlear labyrinths.
Synonym(s): auris. internal ear
Synonyms for internal earnoun a complex system of interconnecting cavitiesSynonymsRelated Words- neuroepithelium
- sense organ
- sensory receptor
- receptor
- auditory apparatus
- membranous labyrinth
- bony labyrinth
- osseous labyrinth
- endolymph
- perilymph
- semicircular canal
- cochlea
- artery of the labyrinth
- internal auditory artery
- labyrinthine artery
- internal auditory vein
- labyrinthine vein
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