内耳道
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"
- the flesh of animals (including fishes and birds and snails) used as food
- a natural body passageway
PrepTutorEJDIC
- (特に戦時中)〈人・船など〉‘を'強制収容する,抑留する
- (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』》
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/06/02 18:26:56」(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 in the public domain from the 20th edition of Gray's Anatomy (1918)
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
- bones
- skull
- face
- neurocranium
- compound structures
- foramina
- upper extremity
- torso
- pelvis
- lower extremity
- Physiology
- Development
- Cells
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| Disease |
- Congenital
- Neoplasms and cancer
- Trauma
- Other
- Symptoms and signs
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| Treatment |
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UpToDate Contents
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English Journal
- Cremated human remains: is measurement of the lateral angle of the meatus acusticus internus a reliable method of sex determination?
- Masotti S1, Succi-Leonelli E, Gualdi-Russo E.
- International journal of legal medicine.Int J Legal Med.2013 Sep;127(5):1039-44. doi: 10.1007/s00414-013-0822-y. Epub 2013 Jan 24.
- The purpose of this study was to evaluate the lateral angle (LA) method-based on the measurement of the angle at which the internal acoustic canal opens up to the surface of the petrous bone-for sex determination in cremated skeletal remains of Italians. The sample consisted of 160 adult individuals
- PMID 23344564
- [Vestibular schwannoma: Part I: epidemiology and diagnostics].
- Hassepass F1, Bulla SB, Aschendorff A, Maier W.
- HNO.HNO.2012 Sep;60(9):837-44; quiz 845-6. doi: 10.1007/s00106-012-2533-y.
- Vestibular schwannoma is with 80% the most frequent of all tumors of the cerebellopontine angle. Usually, this benign, neuroectodermal, mostly unilateral occurring tumor is called acoustic neuroma, although it develops from the Schwann cells of the nerve sheath of the eighth cranial nerve. The tumor
- PMID 22944896
- The nervus intermedius as a variable landmark and critical structure in cerebellopontine angle surgery: an anatomical study and classification.
- Alfieri A1, Fleischhammer J, Peschke E, Strauss C.
- Acta neurochirurgica.Acta Neurochir (Wien).2012 Jul;154(7):1263-8. doi: 10.1007/s00701-012-1359-4. Epub 2012 May 4.
- BACKGROUND: An understanding of the normal topography during cerebellopontine angle surgery is necessary to obviate the anatomical distortions caused by tumors.OBJECTIVE: The aim of this study was to analyze the morphological features of the nervus intermedius (NI) and its related structures in the
- PMID 22555552
Japanese Journal
- ニホンカモシカ(Capricornis crispus)の骨格に関する研究-4-頭蓋(頭蓋骨・顔面骨)について
- 松尾 信一,森下 芳臣
- 信州大学農学部紀要 22(2), p99-138, 1985-12
- … petrous part, mastoid process, tympanic bulla, external acoustic meatus, foramen lacerum, temporal crest, zygomatic process, mandibula fossa. … foramen lacerum, meatus temporalis, foramen retroarticulare, porus acusticus externus, porus acusticus internus, canalis musculotubarius, foramen stylomastoideum, canalis facialis, canaliculus tympanicus. …
- NAID 120005459972
- 松原 浄
- 日本耳鼻咽喉科学会会報 78(7), 601-618, 1975
- … auditiva interna, are seen in the meatus acusticus internus. …
- NAID 130000808681
- ［第22回前庭研究会］内耳道のレントゲン診断:特にStenvers氏法および拡大Stenvers氏法撮影について
- 鳥居 浩,曽田 豊二,調 重昭,中島 雅子,安田 宏一
- 耳鼻と臨床 14(Supplement1), 161-167, 1968
- … of "Meatus acusticus internus" was conducted in 86 cases (172 sides) of vertigo which were treated in the otorhinolaryngological clinic of Kyushu University Hospital.<BR>X-ray photographs were taken respectively through Stenvers' method, Towne's method and Enlarged Stenvers' method.<BR>The following results were obtained through the X-ray film by Stenvers' method, particularly.<BR>1) Average diameter of "Meatus acusticus …
- NAID 130004401628
Related Links
- meatus acusticus internus. See internal acoustic meatus. 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 ...
- Internal acoustic meatus aka Meatus acusticus internus in the latin terminology and part of structures seen on the superior view of the base of the skull. Learn more now! ... Intuitive Videos Tutorials Making complex topics easy to ...
★リンクテーブル★
[★]
- 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
-
- 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。
[★]
道
- 関
- canal、duct、ductal、ductus、pipe、street、tubal、tube、vas
[★]
[★]
- 関
- flesh