internal auditory canal

内耳道

WordNet

1. the quantity contained in a can (同)canful
2. preserve in a can or tin; "tinned foods are not very tasty" (同)tin, put_up
3. airtight sealed metal container for food or drink or paint etc. (同)tin, tin_can
4. a buoy with a round bottom and conical top (同)can buoy
5. provide (a city) with a canal (同)canalize, canalise
6. long and narrow strip of water made for boats or for irrigation
7. (astronomy) an indistinct surface feature of Mars once thought to be a system of channels; they are now believed to be an optical illusion
8. work as an intern; "The young doctor is interning at the Medical Center this year"
9. an advanced student or graduate in medicine gaining supervised practical experience (`houseman is a British term) (同)interne, houseman, medical intern
10. deprive of freedom; "During WW II, Japanese were interned in camps in the West"
11. happening or arising or located within some limits or especially surface; "internal organs"; "internal mechanism of a toy"; "internal party maneuvering"
12. occurring within an institution or community; "intragroup squabbling within the corporation" (同)intragroup
13. a qualified accountant who inspects the accounting records and practices of a business or other organization
14. a student who attends a course but does not take it for credit

PrepTutorEJDIC

1. 《能力》『…することができる』　《可能性・推量》　《平叙文で》『…であり得る』　し得る,かもしれない　《否定文で》…のはずがない,ではあり得ない　《疑問文で》いったい…だろうか　《話》《許可・軽い命令》『…してもよい』　…してあげよう;《疑問文で》…してくれませんか
2. 『かん』(取っ手・ふた・口のついた金属・プラスチック製容器・コップなど) / 《米》(かん詰めの)『かん』,かん詰め(《英》 tin) / かん1杯(の…)《+『of』+『名』》 / …'を'かん詰めにする(また《英》 『tin』) / 《米俗》…'を'くびにする
3. canceled / cancellation / canon / canto
4. 『運河』 / (食道・気菅などの)導菅 / (火星の苗面に見える)運河状の地形
5. (特に戦時中)〈人・船など〉‘を'強制収容する,抑留する
6. 『内側の』,内部にある / 『国内の』(domestic) / 内からとる,内用の
7. 《まれ》聞き手,傍聴人 / 会計検査官,監査役 / 《米》(大学で単位を取らない)聴講生

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2016/10/09 16:56:19」(JST)

wiki en

[Wiki en表示]

Internal auditory meatus
Left temporal bone. Inner surface.
Diagrammatic view of the fundus of the right internal acoustic meatus.
Details
Identifiers
Latin	meatus acusticus internus
TA	A02.1.06.033
FMA	53163
Anatomical terms of bone [edit on Wikidata]

The internal auditory meatus (also meatus acusticus internus, internal acoustic meatus, internal auditory canal, internal acoustic canal, or IAC) is a canal within the petrous part of the temporal bone of the skull between the posterior cranial fossa and the inner ear.

Function

The internal auditory meatus provides a passage through which the vestibulocochlear nerve, the facial nerve, and the labyrinthine artery (an internal auditory branch of the basilar artery) can pass from inside the skull to structures of the inner ear and face.

It also contains the vestibular ganglion.

Structure

The opening to the meatus is called the porus acusticus internus, or its English translation, the internal acoustic opening. It is located inside the posterior cranial fossa of the skull, 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 internal auditory meatus 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 facial nerve travels through the facial canal, eventually exiting the skull at the stylomastoid foramen.

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

• Internal acoustic meatus

• Temporal bone at birth. Inner aspect.

• Base of the skull. Upper surface.

• Horizontal section through left ear; upper half of section.

• The cochlea and vestibule, viewed from above.

• Tympanic cavity. Facial canal. Internal carotid artery.

References

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

See also

• External auditory meatus

External links

• Anatomy figure: 30:01-08 at Human Anatomy Online, SUNY Downstate Medical Center
• cranialnerves at The Anatomy Lesson by Wesley Norman (Georgetown University) (VII)
• Diagram of Porus acusticus internus
• Diagram of Porus acusticus internus

UpToDate Contents

全文を閲覧するには購読必要です。 To read the full text you will need to subscribe.

• 1. 小児における難聴の病因 etiology of hearing impairment in children
• 2. 成人における難聴の病因 etiology of hearing loss in adults
• 3. 小児における赤血球産生低下による貧血 anemia in children due to decreased red blood cell production
• 4. 前庭神経鞘腫（聴神経腫） vestibular schwannoma acoustic neuroma
• 5. 痔核の外来手術 outpatient and surgical procedures for hemorrhoids

English Journal

• X-linked Malformation and Cochlear Implantation.

• Smeds H1, Wales J, Asp F, Löfkvist U, Falahat B, Anderlid BM, Anmyr L, Karltorp E.
• Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology.Otol Neurotol.2017 Jan;38(1):38-46.
• OBJECTIVE: To evaluate if cochlear implantation is safe and constitutes an option for hearing rehabilitation of children with x-linked inner ear malformation.STUDY DESIGN: Retrospective patient review in combination with a multidisciplinary follow-up.SETTING: Tertiary referral hospital and cochlear
• PMID 27779564

• Auditory changes in acromegaly.

• Tabur S1, Korkmaz H2, Baysal E3, Hatipoglu E4, Aytac I5, Akarsu E1.
• Journal of endocrinological investigation.J Endocrinol Invest.2016 Dec 29. doi: 10.1007/s40618-016-0602-x. [Epub ahead of print]
• OBJECTIVE: The aim of this study is to determine the changes involving auditory system in cases with acromegaly.MATERIALS AND METHODS: Otological examinations of 41 cases with acromegaly (uncontrolled n = 22, controlled n = 19) were compared with those of age and gender-matched 24 healthy subjec
• PMID 28035526

• Enlarged vestibular aqueducts and other inner-ear abnormalities in patients with Down syndrome.

• Clark CM1, Patel HH1, Kanekar SG2, Isildak H1.
• The Journal of laryngology and otology.J Laryngol Otol.2016 Dec 28:1-5. doi: 10.1017/S0022215116009786. [Epub ahead of print]
• BACKGROUND: Histopathological anomalies of inner-ear structures in individuals with Down syndrome have been well documented; however, few studies have examined the radiological features.METHODS: A retrospective study was conducted of temporal bone computed tomography images in 38 individuals (75 ear
• PMID 28027715

Japanese Journal

• 新生児聴覚スクリーニングにおいてpassであった先天性一側性内耳道狭窄例

• 多田 誠,平川 治男,西 康行 [他],渡部 泰輔
• 耳鼻咽喉科臨床 108(8), 593-599, 2015
• … She had passed the newborn hearing screening (NHS) with the automated auditory brainstem response (automated ABR) test. … CT imaging of the right temporal bone revealed internal auditory canal stenosis. … These results indicate that hearing impairment might appear after birth in patients with congenital unilateral internal auditory canal stenosis. …
• NAID 130005090174

• 後頭蓋窩開頭手術における静脈洞と骨の透見合成画像の有用性

• 森脇 寛,佐々木 雄彦,山﨑 貴明,嶋﨑 光哲,妹尾 誠,香城 孝麿,久保田 司,中西 尚史,佐藤 司,森 大輔,櫻井 卓,西谷 幹雄
• 脳神経外科ジャーナル 24(6), 407-412, 2015
•  安全な後頭蓋窩開頭手術には静脈構造の術前把握が重要である. われわれは頭部CTとMRIから, 画像解析ワークステーションでCTの骨情報とMRIの静脈情報を融合させ, 縫合線などの骨の指標と静脈洞の位置関係を同時に把握できる三次元画像を作製しており, 今回, その有用性を検討した. その結果, 本法が適切な開頭, 骨削除の支援となり得ることが示され, 有用性が認められた. 本法は造影剤が不要であり …
• NAID 130005083635

• A Case of Cholesteatoma Causing a Cerebellar Abscess

• Kimura Toshiya,Mizukoshi Akifumi,Sogami Tohru,Ichimaru Kazuyuki,Ohno Tsunehisa,Oda Naoharu,Hiraumi Harukazu,Tamaki Hisanobu,Ito Juichi
• 耳鼻咽喉科臨床　補冊 141(0), 2-3, 2015
• … CT images revealed bilateral cholesteatomas, and there was a lateral semicircular canal fistula with expansion of the cochlea and the posterior semicircular canal in the right ear. … We presume that the infection route of this case was the internal auditory meatus. …
• NAID 130005077980

Related Links

• Internal auditory meatus - Wikipedia, the free encyclopedia

The internal auditory meatus (also Meatus acusticus internus, internal acoustic meatus, internal auditory canal, and internal acoustic canal) is a canal in the petrous part of the temporal bone of the skull that carries nerves from inside the ...

Related Pictures

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★リンクテーブル★

リンク元	「内耳道」
関連記事	「can」「canal」「internal」「intern」「auditory」

「内耳道」

　　[★]

英

internal acoustic meatus (KA), internal auditory meatus, internal auditory canal

ラ

meatus acusticus internus

関

内耳神経、内耳孔

• 図：N.118

• 内耳孔からほぼ外側(わずかに前方)に向かい蝸牛器官、前庭器官に至る

通過する構造物

• 顔面神経
• 中間神経
• 内耳神経：内耳道に入るとすぐに分岐

• 前庭神経：

• 上部前庭神経：前膨大部(回転, 矢状断平面＊)、外側膨大部(回転, 冠状断平面＊)、卵形嚢(水平加速度)
• 下部前庭神経：後膨大部(回転, 水平断平面＊)、球形嚢(垂直加速度)

• 蝸牛神経：ラセン神経節を介して内有毛細胞と外有毛細胞に分布

• 迷路動脈、迷路静脈

＊錐体は頭蓋に対してある角度をもって位置しているため、厳密な意味で水平断平面、矢状断平面、冠状断平面ではない。

「can」

　　[★]

• aux.

• (過去could)
• (可能)～できる、～しようと思えばできる、～する能力がある。
• (推量)～する可能性がある、～することがあり得る、～する/になることがある、～しない/にならないとも限らない。
• (許可)～してもよい、～しても差し支えない。

関

able、feasible、possible

　 　 　 　 　 　 　

「canal」

　　[★]

• n.

• 水路、管、導管

関

conduit、duct、ductal、ductus、meatus、pipe、tubal、tube、vas、vessel

　 　 　 　

「internal」

　　[★]

• adj.

• 内部の、内の、体内の、内的な

関

endo、in vivo、interior、internally、intra

　 　 　

「intern」

　　[★]

• n.

• インターン、医学研修生

　 　 　 　

「auditory」

　　[★]

• adj.

• 聴覚性の

関

acoustic