内耳孔
WordNet
- first or beginning; "the memorable opening bars of Beethovens Fifth"; "the plays opening scene"
- opportunity especially for employment or promotion; "there is an opening in the sales department"
- a recognized sequence of moves at the beginning of a game of chess; "he memorized all the important chess openings" (同)chess opening
- a vacant or unobstructed space that is man-made; "they left a small opening for the cat at the bottom of the door"
- becoming open or being made open; "the opening of his arms was the sign I was waiting for"
- the act of opening something; "the ray of light revealed his cautious opening of the door"
- an open or empty space in or between things; "there was a small opening between the trees"; "the explosion made a gap in the wall" (同)gap
- the first performance (as of a theatrical production); "the opening received good critical reviews" (同)opening_night, curtain raising
- a ceremony accompanying the start of some enterprise
- the initial part of the introduction; "the opening established the basic theme"
- work as an intern; "The young doctor is interning at the Medical Center this year"
- an advanced student or graduate in medicine gaining supervised practical experience (`houseman is a British term) (同)interne, houseman, medical intern
- deprive of freedom; "During WW II, Japanese were interned in camps in the West"
- happening or arising or located within some limits or especially surface; "internal organs"; "internal mechanism of a toy"; "internal party maneuvering"
- occurring within an institution or community; "intragroup squabbling within the corporation" (同)intragroup
- a remedy for hearing loss or deafness
- of or relating to the science of acoustics; "acoustic properties of a hall" (同)acoustical
- the study of the physical properties of sound
PrepTutorEJDIC
- 〈C〉(森・垣根・壁などの)空いている所;空き地;すき間,穴 / 〈C〉(物語・会議などの)始め,出だし,冒頭(beginning) / 〈C〉(…の地位の)空き,就職口《+『for』(『at, in』)+『名』》(vacant) / 〈C〉(劇などの)初演 / 〈U〉(…が)開くこと,あくこと《+『of』+『名』》 / 〈C〉(…の)よい機会,好機《+『for』+『名』》 / 初めの,開始の
- (特に戦時中)〈人・船など〉‘を'強制収容する,抑留する
- 『内側の』,内部にある / 『国内の』(domestic) / 内からとる,内用の
- 音響の;聴覚の / (特に楽器が電気的に増幅・変化されていない)自然音を出す
- 《単数扱い》音響学 / 《複数扱い》(劇場などの)音響効果
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア(Wikipedia)』「2013/02/15 21:58:58」(JST)
[Wiki en表示]
Bone: Internal auditory meatus |
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Left temporal bone. Inner surface. |
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Diagrammatic view of the fundus of the right internal acoustic meatus. |
Latin |
meatus acusticus internus |
Gray's |
subject #34 143 |
The internal auditory meatus (also meatus acusticus internus, internal acoustic meatus, internal auditory canal, internal acoustic canal, or IAC) is a canal in the petrous part of the temporal bone of the skull that carries nerves from inside the skull towards the middle and inner ear, namely cranial nerve VII and cranial nerve VIII. There are two internal auditory meati in most individuals, one on the left side of the skull and one on the right.
Contents
- 1 Structure
- 2 Additional images
- 3 See also
- 4 External links
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Structure
The opening to the internal acoustic meatus is located inside the cranial cavity, near the center of the posterior surface of the petrous part of the temporal bone. The size varies considerably; its margins are smooth and rounded. The canal is short (about 1 cm) and runs laterally into the bone. At its end are the openings for three different canals, one of which is the facial canal.
The internal acoustic meatus transmits the facial and vestibulocochlear nerves and the labyrinthine artery (an internal auditory branch of the basilar artery). The facial nerve travels through the facial canal, eventually exiting the skull at the stylomastoid foramen.
The opening of the meatus is called the porus acusticus internus, or its English translation, the internal acoustic opening.
The antero-superior part transmits the facial nerve and nervus intermedius and is separated from the postero-superior section, which transmits the superior vestibular nerve, by Bill's bar (named by William F. House). The falciform crest or transverse crest separates the superior part from the inferior part. The cochlear nerve runs antero-inferiorly and the inferior vestibular nerve runs postero-inferiorly.
Additional images
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Temporal bone at birth. Inner aspect.
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Base of the skull. Upper surface.
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Horizontal section through left ear; upper half of section.
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The cochlea and vestibule, viewed from above.
See also
External links
- SUNY Figs 30:01-08
- cranialnerves at The Anatomy Lesson by Wesley Norman (Georgetown University) (VII)
- Diagram of Porus acusticus internus
- Diagram of Porus acusticus internus
This article incorporates text from a public domain edition of Gray's Anatomy.
Bones of head and neck: the neurocranium of the skull (TA A02.1.01–07, GA 2.129–155)
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Occipital |
Squama |
- external
- Inion/External occipital protuberance
- External occipital crest
- Nuchal lines
- planes
- internal
- Cruciform eminence
- Internal occipital protuberance
- Sagittal sulcus
- Internal occipital crest
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Lateral parts |
- Condyle
- Condyloid fossa
- Condylar canal
- Hypoglossal canal
- jugular
- Jugular process
- Jugular tubercle
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Basilar part |
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Other |
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Parietal |
- Parietal eminence
- Temporal line
- Parietal foramen
- Sagittal sulcus
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Frontal |
Squama |
- Frontal suture
- Frontal eminence
- external
- Superciliary arches
- Glabella
- foramina
- Zygomatic process
- internal
- Sagittal sulcus
- Frontal crest
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Orbital part |
- Ethmoidal notch
- Fossa for lacrimal gland
- Trochlear fovea
- Frontal sinus
- Frontonasal duct
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Temporal |
Squama |
- Articular tubercle
- Suprameatal triangle
- Mandibular fossa
- Petrotympanic fissure
- Zygomatic process
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Mastoid part |
- Mastoid foramen
- Mastoid process (Mastoid cells)
- Mastoid notch
- Occipital groove
- Sigmoid sulcus
- Mastoid antrum (Aditus)
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Petrous part |
- Carotid canal
- Facial canal (Hiatus)
- Internal auditory meatus
- Cochlear aqueduct
- Stylomastoid foramen
- fossae
- Subarcuate fossa
- Jugular fossa
- canaliculi
- Inferior tympanic
- Mastoid
- Styloid process
- Petrosquamous suture
- (note: ossicles in petrous part, but not part of temporal bone)
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Tympanic part |
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Sphenoid |
Surfaces |
- Superior surface: Sella turcica
- Dorsum sellae
- Tuberculum sellae
- Hypophysial fossa
- Posterior clinoid processes
- Ethmoidal spine
- Chiasmatic groove
- Middle clinoid process
- Petrosal process
- Clivus
- Lateral surface: Carotid groove
- Sphenoidal lingula
- Anterior surface: Sphenoidal sinuses
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Great wings |
- foramina
- Rotundum
- Ovale
- Vesalii
- Spinosum
- Spine
- Infratemporal crest
- Sulcus for auditory tube
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Small wings |
- Superior orbital fissure
- Anterior clinoid process
- Optic canal
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Pterygoid
processes |
- fossae
- pterygoid plates
- Pterygoid canal
- Hamulus
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Other |
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Ethmoid |
Plates |
- Cribriform plate
- Crista galli
- Olfactory foramina
- Perpendicular plate
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Surfaces |
- Lateral surface Orbital lamina
- Uncinate process
- Medial surface Superior nasal concha
- Superior meatus
- Middle nasal concha
- Middle meatus
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Labyrinth |
- Ethmoid sinus
- ethmoidal foramina
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anat (c/f/k/f, u, t/p, l)/phys/devp/cell
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noco/cong/tumr, sysi/epon, injr
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Bones of head and neck: Foramina of the skull (and canals, fissures, meati, and hiati) (TA A02.1.00.053–097, GA 2.178–199)
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Anterior cranial fossa |
to Orbit: ethmoidal foramina (anterior, posterior)
to Nasal cavity: olfactory foramina (CN-I) · foramen cecum
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Middle cranial fossa |
to Orbit: optic canal (CN-II) · superior orbital fissure (CN-III,IV,V1,VI)
to Pterygopalatine fossa: foramen rotundum (CN-V2) · pterygoid canal
to Infratemporal fossa: foramen ovale (CN-V3) · foramen spinosum/carotid canal
other: foramen lacerum · hiatus for greater petrosal nerve · hiatus for lesser petrosal nerve · sphenoidal emissary foramen
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Posterior cranial fossa |
internal auditory meatus/facial canal/stylomastoid foramen (CN-VII,VIII) · jugular foramen (CN-IX,X,XI) · foramen magnum (CN-XI) · hypoglossal canal (CN-XII) · condylar canal · mastoid foramen
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Orbit |
to Nasal cavity: nasolacrimal canal
to Face: supraorbital (notch, foramen) · infraorbital (foramen, groove) · zygomatic foramen (-facial, -temporal)
to Pterygopalatine fossa: inferior orbital fissure
other: Inferior orbital fissure · Fossa for lacrimal sac
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Pterygopalatine fossa |
to Nasal cavity: sphenopalatine foramen
to Oral cavity: greater palatine canal/greater palatine foramen · lesser palatine canals/lesser palatine foramina
to Infratemporal fossa: pterygomaxillary fissure
to Nasopharynx: palatovaginal canal
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to Oral cavity: incisive canals · incisive foramen
to Nasal cavity: Foramen vomerinum · Meatus vomerinus · Fissura vomerina · Hiatus vomerinus
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Other |
external acoustic meatus · mandibular foramen · mental foramen · parietal foramen · petrotympanic fissure · semilunar hiatus
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anat (c/f/k/f, u, t/p, l)/phys/devp/cell
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noco/cong/tumr, sysi/epon, injr
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UpToDate Contents
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English Journal
- Dissection and exposure of the whole course of deep nerves in human head specimens after decalcification.
- Liu L, Arnold R, Robinson M.SourceDiscipline of Anatomy and Histology, University of Sydney, Anderson Stuart Building F13, Sydney, NSW 2006, Australia.
- International journal of otolaryngology.Int J Otolaryngol.2012;2012:418650. Epub 2012 Mar 15.
- The whole course of the chorda tympani nerve, nerve of pterygoid canal, and facial nerves and their relationships with surrounding structures are complex. After reviewing the literature, it was found that details of the whole course of these deep nerves are rarely reported and specimens displaying t
- PMID 22523494
- Use of piezosurgery for internal auditory canal drilling in acoustic neuroma surgery.
- Grauvogel J, Scheiwe C, Kaminsky J.SourceDepartment of Neurosurgery, Albert Ludwig University of Freiburg, Breisacherstr. 64, 79106, Freiburg, Germany. juergen.grauvogel@uniklinik-freiburg.de
- Acta neurochirurgica.Acta Neurochir (Wien).2011 Oct;153(10):1941-7; discussion 1947. Epub 2011 Jul 27.
- BACKGROUND: Piezosurgery is based on microvibrations generated by the piezoelectrical effect and has a selective bone-cutting ability with preservation of soft tissue. This study examined the applicability of Piezosurgery compared to rotating drills (RD) for internal auditory canal (IAC) opening in
- PMID 21792697
Japanese Journal
- 河野 道宏
- Japanese Journal of Neurosurgery 23(1), 20-28, 2014
- 聴神経腫瘍の手術は, 腫瘍の摘出とともに顔面神経機能や聴機能の温存が求められる. 放射線治療が確立している現在, 手術適応について厳密さを求められるようになっている. 現在, コンセンサスが得られている手術適応は, 脳槽部25∼30mm以上の大きさの腫瘍や嚢胞性の腫瘍, 若い患者の聴力温存目的のケースや成長速度の速い腫瘍であると考えられる. 聴神経腫瘍手術における機能温存のための重要なポイントと …
- NAID 130003397682
- 641 エンジン構造の運動と衝突を考慮した連成振動および放射騒音解析法
- 鄭 光澤,太田 和秀,中原 聡彦,田島 功基,池田 幸一郎
- Dynamics & Design Conference 2011, "641-1"-"641-10", 2011-09-05
- … Main causes of engine noise level and sound quality are piston slap, main bearing impact force, gear impact force, fuel injection pressure and valve train opening and closing force. … This paper presents the theoretical procedure to predict the vibratory response and radiated noise of the engine block considering the dynamic effect of motion and impact vibration of components of internal combustion engine. …
- NAID 110009691864
- インデンテーション法におけるセラミックTiN薄膜の破壊機構解明とその強度評価(<特集>マイクロマテリアル)
- 米津 明生,大野 卓志,小川 武史 [他],竹本 幹男
- 材料 54(10), 1030-1035, 2005-10-15
- … Micro-Vickers indentation tests in conjunction with acoustic emission (AE) monitoring were performed for TiN films deposited on three kinds of substrates, soft and hard steel by physical vapor deposition (PVD) method. … Most AEs detected were produced by Mode-I cracking with opening vector in the direction parallel to the film surface. … Internal stress in the films was analyzed by the finite element method (FEM) to study the influence of substrates on the fracture mechanism. …
- NAID 110006266403
Related Links
- internal acoustic opening [TA] the inner opening of the internal acoustic meatus on the posterior surface of the petrous part of the temporal bone. Synonym(s): porus acusticus internus [TA], auditory pore, internal acoustic foramen ...
- Definition and other additional information on Internal acoustic opening from Biology-Online.org dictionary. Login Welcome to biology-online.org! Please login to access all site features. Create account. Log me on automatically | | ...
Related Pictures
★リンクテーブル★
[★]
- 英
- internal acoustic opening, internal auditory meatus
- ラ
- porus acusticus internus
[★]
- 関
- acoustical、audition、auditory、hearing
[★]
- 関
- endo、in vivo、interior、internally、intra
[★]
- 関
- aperture、open、orificial
[★]