内耳孔
WordNet
- 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 qualified accountant who inspects the accounting records and practices of a business or other organization
- a student who attends a course but does not take it for credit
- the flesh of animals (including fishes and birds and snails) used as food
- of or relating to the process of hearing; "auditory processing"; "an audile person" (同)audile, auditive
PrepTutorEJDIC
- (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
- 《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
- (食用の)『動物の肉』 / 《英古》《米文》(一般的に)『食物』(food) / (課実などの)食用部分,果肉 / (議論・書物などの)最も重要な部分,主眼点,骨子《+『of』+『名』》
- 耳の,聴覚の
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/02/04 07:27:50」(JST)
[Wiki en表示]
| 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.
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| Details |
| Latin |
meatus acusticus internus |
| Identifiers |
| Gray's |
p.143 |
| TA |
A02.1.06.033 |
| FMA |
53163 |
| Anatomical terms of bone |
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, on each side, and serves as the passageway for the cranial nerves, namely cranial nerve VII and cranial nerve VIII, and for the labyrinthine artery, between the middle and inner ear.
Contents
- 1 Structure
- 2 Additional images
- 3 References
- 4 See also
- 5 External links
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.
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Tympanic cavity. Facial canal. Internal carotid artery.
References
This article incorporates text from a public domain edition of Gray's Anatomy.
See also
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
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Foramina of the skull (and canals, fissures, meatus, and hiatus)
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| Anterior cranial fossa |
| to Orbit: |
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| 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)
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| to Pterygopalatine fossa: |
- foramen rotundum (CN-V2)
- pterygoid canal
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| to Infratemporal fossa: |
- foramen ovale (CN-V3)
- foramen spinosum/carotid canal
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| 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: |
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| to face: |
- supraorbital
- infraorbital
- zygomatic foramen
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| to Pterygopalatine fossa: |
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| other: |
- Inferior orbital fissure
- Fossa for lacrimal sac
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| Pterygopalatine fossa |
| to Nasal cavity: |
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| to Oral cavity: |
- greater palatine canal
- lesser palatine canals
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| to Infratemporal fossa: |
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| to Nasopharynx: |
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| to oral cavity: |
- incisive canals
- incisive foramen
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| 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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Index of bones and cartilage
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| Description |
- Anatomy
- skull
- face
- neurocranium
- compound structures
- foramina
- upper extremity
- torso
- pelvis
- lower extremity
- Physiology
- Development
- Cells
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| Disease |
- Congenital
- Neoplasms and cancer
- Fracture
- Other
- Symptoms and signs
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| Treatment |
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UpToDate Contents
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English Journal
- Anatomical study of the central myelin portion and transitional zone of the vestibulocochlear nerve.
- Guclu B, Sindou M, Meyronet D, Streichenberger N, Simon E, Mertens P.SourceDepartment of Neurosurgery, Hopital Neurologique Pierre Wertheimer, University of Lyon 1, Lyon, France, guclubulent@hotmail.com.
- Acta neurochirurgica.Acta Neurochir (Wien).2012 Dec;154(12):2277-83. doi: 10.1007/s00701-012-1479-x. Epub 2012 Aug 23.
- BACKGROUND: The aim of this study was to evaluate gross and microscopic anatomical features of the vestibulocochlear nerve or eighth cranial nerve (CNVIII) from fresh cadavers, especially the nerve's central myelin portion (CMP) and transitional zone (TZ), and to consider any pathological implicatio
- PMID 22914910
- Neuromuscular Choristoma of the Internal Auditory Meatus.
- Nikolaou G, Röösli C, Huber A, Probst R.SourceDepartment of Otorhinolaryngology, Head and Neck Surgery, University Hospital of Zurich, Zurich, Switzerland.
- ORL; journal for oto-rhino-laryngology and its related specialties.ORL J Otorhinolaryngol Relat Spec.2012 Oct 11;74(5):246-249. [Epub ahead of print]
- Choristomas of the internal auditory meatus are exceedingly rare tumors. In most cases, neuromuscular choristomas have initially been misdiagnosed as vestibular schwannomas (VS). No known characteristics in the clinical presentation or in imaging exist distinguishing these tumors from VS, which are
- PMID 23076347
- Impact of video-endoscopy on the results of retrosigmoid-transmeatal microsurgery of vestibular schwannoma: prospective study.
- Chovanec M, Zvěřina E, Profant O, Skřivan J, Cakrt O, Lisý J, Betka J.SourceDepartment of Otorhinolaryngology, Head and Neck Surgery, 1st Faculty of Medicine, Faculty Hospital Motol, Charles University, V Úvalu 84, 150 06, Prague 5, Czech Republic, martin.chovanec@lf1.cuni.cz.
- European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery.Eur Arch Otorhinolaryngol.2012 Aug 4. [Epub ahead of print]
- Endoscopy-assisted microsurgery represents modern trend of treatment of the cerebellopontine angle (CPA) pathologies including vestibular schwannoma (VS). Endoscopes are used in adjunct to microscope to achieve better functional results with less morbidity. Angled optics, magnification and illuminat
- PMID 23010789
Japanese Journal
- 細菌性髄膜炎を反復した内耳、アブミ骨形態異常の 1 例
- 原因不明一側性末梢前庭障害の検討:―内側型高位頸静脈球との関連―
- A Case of Cholesteatoma Causing a Cerebellar Abscess
Related Links
- Internal auditory meatus definition, the canal extending through the petrous portion of the temporal bone, through which the glossopharyngeal nerve, the facial nerve, and the auditory nerve and artery pass. See more. Thesaurus ...
- in·ter·nal a·cous·tic me·a·tus [TA] a canal beginning at the opening of the internal acoustic meatus in the posterior cranial fossa, passing laterally through the petrous portion of the temporal bone to end at the fundus, where a thin ...
★リンクテーブル★
[★]
- 英
- vestibulocochlear nerve (N)
- ラ
- nervus vestibulocochlearis
- 同
- 第8脳神経 eighth cranial nerve CN VIII
- 関
- 脳神経、内耳道 internal auditory meatus
| 一般感覚性
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臓性感覚性
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特殊感覚性
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体性運動性
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臓性運動性
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鰓弓運動性
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神経細胞(中枢神経外)
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神経細胞(中脳)
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神経細胞(橋)
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神経細胞(延髄)
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神経細胞(脊髄)
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○-< 節後ニューロン
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頭蓋からの出口
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分布と機能
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膝神経節
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内耳道、顔神経管、茎乳突孔
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外耳道の皮膚の感覚
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膝神経節
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舌の2/3，口腔底、口蓋の味覚
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翼口神経節、顎下神経節
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副交感神経：顎下腺、舌下腺、涙腺、鼻と口蓋の腺
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支配筋：顔の表情筋、中耳のアブミ骨、茎突舌骨筋、顎二腹筋の後腹
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臨床関連
[★]
- 英
- internal acoustic meatus (KA), internal auditory meatus, internal auditory canal
- ラ
- meatus acusticus internus
- 関
- 内耳神経、内耳孔
- 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
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- 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)
- ＊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。
[★]
- 英
- internal acoustic opening, internal auditory meatus
- ラ
- porus acusticus internus
[★]
- 関
- endo、in vivo、interior、internally、intra
[★]
道
- 関
- canal、duct、ductal、ductus、pipe、street、tubal、tube、vas
[★]
[★]
- 関
- acoustic
[★]
- 関
- flesh