WordNet

of or characteristic of low rank or importance
one of lesser rank or station or quality
having an orbit between the sun and the Earths orbit; "Mercury and Venus are inferior planets"
lower than a given reference point; "inferior alveolar artery"
of low or inferior quality
of or near the head end or toward the front plane of a body
earlier in time (同)prior
a major thoroughfare that bears important traffic
a blood vessel that carries blood from the heart to the body (同)arteria, arterial blood vessel
relating to or associated with the cerebellum; "cerebellar artery"

PrepTutorEJDIC

(階級・親分・質・程度などが)『下の』,『劣る』, / (位置が)低い,下方の / 目下の者;劣った人
(場所などが)前の,前部の;(…より)前に位置する《+『to』+『名』》 / (時・事件などが)以前の,先の;(…より)前の《+『to』+『名』》
動脈 / (道路・水路・鉄道などの)勘線,(通信の)主チャンネル

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2014/04/08 22:39:49」(JST)

wiki en

The anterior inferior cerebellar artery (AICA) is an artery in the brain that supplies part of the cerebellum.

It arises from the basilar artery at the level of the junction between the medulla oblongata and the pons in the brainstem. It passes backward to be distributed to the anterior part of the undersurface of the cerebellum, anastomosing with the posterior inferior cerebellar branch of the vertebral artery. It supplies the anterior inferior quarter of the cerebellum.

It also gives off the labyrinthine artery in most cases; however, the labyrinthine artery can emerge as a branch of the basilar artery in others.

Clinical significance

Occlusion of AICA results in lateral pontine syndrome, also known as AICA syndrome. The symptoms include sudden onset vertigo and vomiting, nystagmus, falling to the side of the lesion (due to damage to vestibular nuclei), ipsilateral loss of sensation of the face (due to damage to principal sensory trigeminal nucleus), ipsilateral facial paralysis (due to damage to the facial nucleus) and ipsilateral hearing loss and tinnitus (due to damage to the cochlear nuclei).

References

This article incorporates text from a public domain edition of Gray's Anatomy.

External links

Anatomy photo:28:09-0224 at the SUNY Downstate Medical Center
anterior+inferior+cerebellar+artery at eMedicine Dictionary
http://neuroangio.org/anatomy-and-variants/aica/
Anatomy diagram: 13048.000-1 at Roche Lexicon - illustrated navigator, Elsevier

The arteries of the base of the brain. Anterior inferior cerebellar labeled near bottom. The temporal pole of the cerebrum and a portion of the cerebellar hemisphere have been removed on the right side. Inferior aspect (viewed from below).

This cardiovascular system article is a stub. You can help Wikipedia by expanding it.

UpToDate Contents

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4. 重大な冠動脈左前下行枝近位部病変のマネージメント management of significant proximal left anterior descending coronary artery disease
5. 左脚前枝ブロック left anterior fascicular block

English Journal

Anatomical features of the vertebral artery for transbrachial direct cannulation of a guiding catheter to perform coil embolization of cerebral aneurysms in the posterior cerebral circulation.

Iwata T1, Mori T2, Miyazaki Y1, Tanno Y1, Kasakura S1, Aoyagi Y1.
Interventional neuroradiology : journal of peritherapeutic neuroradiology, surgical procedures and related neurosciences.Interv Neuroradiol.2015 May 11. pii: 1591019915582963. [Epub ahead of print]
BACKGROUND: Transbrachial approach is an alternative technique for coil embolization of posterior circulation aneurysms. The purpose of our study was to investigate the anatomical features of the vertebral artery (VA) for transbrachial direct VA cannulation of a guiding catheter (GC) to perform coil
PMID 25964434

Ruptured distal AICA pseudoaneurysm presenting years after vestibular schwannoma resection and radiation.

Mascitelli JR1, McNeill IT1, Mocco J1, Berenstein A1, DeMattia J1, Fifi JT1.
Journal of neurointerventional surgery.J Neurointerv Surg.2015 May 11. pii: neurintsurg-2015-011736.rep. doi: 10.1136/neurintsurg-2015-011736.rep. [Epub ahead of print]
Distal anterior inferior cerebellar artery (AICA) pseudoaneurysms are very rare lesions. Although cases have been previously reported, only a few have been reported as a result of vestibular schwannoma (VS) radiation, none have been reported as a result of VS resection, and only one has been reporte
PMID 25964373

Ruptured distal AICA pseudoaneurysm presenting years after vestibular schwannoma resection and radiation.

Mascitelli JR1, McNeill IT1, Mocco J1, Berenstein A1, DeMattia J1, Fifi JT1.
BMJ case reports.BMJ Case Rep.2015 May 6;2015. pii: bcr2015011736. doi: 10.1136/bcr-2015-011736.
Distal anterior inferior cerebellar artery (AICA) pseudoaneurysms are very rare lesions. Although cases have been previously reported, only a few have been reported as a result of vestibular schwannoma (VS) radiation, none have been reported as a result of VS resection, and only one has been reporte
PMID 25948851

Japanese Journal

Occipital Artery-Anterior Inferior Cerebellar Artery Bypass With Microsurgical Trapping for Exclusively Intra-meatal Anterior Inferior Cerebellar Artery Aneurysm Manifesting as Subarachnoid Hemorrhage : Case Report

FUJIMURA Miki,INOUE Takashi,SHIMIZU Hiroaki,TOMINAGA Teiji
Neurologia medico-chirurgica = 神経外科 52(6), 435-438, 2012-06-15
… A 77-year-old woman presented with an extremely rare exclusively intra-meatal anterior inferior cerebellar artery (AICA) aneurysm manifesting as subarachnoid hemorrhage. … The ipsilateral posterior inferior cerebellar artery was hypoplastic and the affected AICA supplied a wide vascular territory in the right cerebellum. …
NAID 10030435221

フリーラジカル消去剤エダラボン投与が著効を示した急性期小脳・脳幹梗塞めまい症例

井上雄太,矢部多加夫,松浦省己
Equilibrium research 71(3), 176-181, 2012-06-01
… We report on 2 cases where edaravone (radicut<SUP>®</SUP>) was effective against acute brainstem and cerebellar infarction with vertigo. … Therefore, MRI was performed and showed a cerebellar infarction in the territory of the anterior inferior cerebellar artery. …
NAID 10030781842

Ruptured Aneurysm of a Posterior Inferior Cerebellar Artery Communicationg Artery : Case Report and Histological Findings

SUGIYAMA Shin-ichiro,FUJIMURA Miki,INOUE Takashi,SHIMIZU Hiroaki,WATANABE Mika,TOMINAGA Teiji
Neurologia medico-chirurgica = 神経外科 52(2), 81-83, 2012-02-15
… A hypertensive 60-year-old man presented with a rare aneurysm arising from the posterior inferior cerebellar artery (PICA) communicating artery, manifesting as subarachnoid hemorrhage with intraventricular hemorrhage. … Angiography showed a small aneurysm arising from a fine and tortuous artery interconnecting the bilateral vermian branches of distal PICAs. …
NAID 10030127313

Related Pictures

★リンクテーブル★

リンク元	「小脳」「前下小脳動脈」「AICA」
関連記事	「inferior」「anterior」「inferio」「cerebellar」

「小脳」

Artery: Anterior inferior cerebellar artery
	; The three major arteries of the cerebellum: the SCA, AICA, and PICA (anterior inferior cerebellar artery is AICA)
	; Diagram of the arterial circulation at the base of the brain (anterior inferior cerebellar artery labeled at lower right)
Latin	Arteria cerebelli inferior anterior
Gray's	p.580
Supplies	Cerebellum
Source	Basilar artery
Branches	Labyrinthine artery
Vein	Inferior cerebellar veins

　　[★]

英: cerebellum

SP. 392,393
PT.105

発生

菱脳→後脳→小脳

解剖

小脳は上・中・下小脳脚によって脳幹と結合している

上小脳脚

主として小脳核から視床および脳幹へ向かう遠心性線維

中小脳脚

大脳皮質から橋核を介して主として半球外側に向かう求心性線維

下小脳脚

脳幹および延髄から主として虫部と半球中間部に向かう求心性線維

血管

機能概要

運動のタイミング決定と一つの運動から次の運動への急速な切り替え

機能

①運動開始に関与
②運動学習に関与
③多関節にわたる運動に関与
④フィードバックモード、フィードフォワードモードに関与

フィードバックモード~

熟練した運動で、早く動かさないとき

フィードフォワードモード~

素早い運動を行うとき。学習を行うとき

入力経路

1)体性感覚

①楔状核小脳路
②背側脊髄小脳路
③腹側脊髄小脳路
体の固有感覚は上小脳脚や下小脳脚から入り、脊髄小脳に投射

2)前庭感覚入力

前庭小脳路
前庭神経核→下小脳脚→前庭小脳、虫部

3)視覚、聴覚入力

中脳蓋小脳路
上丘(視覚)、下丘(聴覚)→上小脳脚→脊髄小脳路

4)大脳からの入力

橋小脳路
運動野(4,6野)、前頭前野(9,10野)、頭頂葉(5野)→橋核→中小脳脚→脊髄小脳、大脳小脳

5)運動の誤差情報の入力

障害 (KAPLAN USMLE STEP 1 QBOOK p.54)

障害

小脳性運動失調

平衡障害、筋緊張異常、運動障害に分けられる

1)片葉小節葉の障害 ... 入力は前庭器官

平衡障害

体幹失調=姿勢の制御不良
失調性歩行
注視方向への眼振(注意方向性眼振=注視眼振)

Tomberg兆候(-)(両側をそろえて開眼して立つ、その後閉眼しても倒れない)

2)虫部の障害 ...

体幹筋失調による歩行障害(体幹歩行失調, 失調性歩行)

酩酊様歩行
開脚歩行
継ぎ足歩行

3)小脳半球の障害

四肢の運動失調(協調運動障害)
①推尺障害
②変換運動障害
③運動解離
④共同運動不能
⑤失調性構音障害

筋緊張低下

中位核の障害により、皮質脊髄路、赤核脊髄路ニューロンの活動が低下する。

臨床関連

「前下小脳動脈」

　　[★]

英: anterior inferior cerebellar artery (KL) AICA, anterior inferior cerebellai artery
ラ: arteria cerebelli inferior anterior
関: 大脳動脈、脳底動脈、後下小脳動脈、小脳

図：N.134

由来

脳底動脈

走行

迷路動脈と前下小脳動脈が外転神経を挟み込んでいる

橋の上部で脳底動脈から分岐し、外転神経の下から外側に向かう (N.134)
顔面神経・内耳神経の下、舌咽神経・迷走神経の上を通り抜け、小脳前部に至る (N.134)

分布

橋の片側を支配し、小脳に至る。(CNUR.48)
小脳下面の前部に分布

枝

「AICA」

　　[★] 前下小脳動脈 anterior inferior cerebellar artery

「inferior」

　　[★]

adj.

下位の、下方の、劣る、劣性の

関: inferio、inferiorly、infra、lower、recessive、recessively、recessiveness

「anterior」

　　[★]

adj.

前側の、前の

関: anterioris、anteriorly、before、fore、former、pre、prior

「inferio」

　　[★]

comb form.

下位の、下

関: inferior、inferiorly、infra、lower、sub、underneath

「cerebellar」

　　[★]

adj.

小脳の、小脳性の

関: cerebelli、cerebellum

匿名

検索

案内

案内

anterior inferior cerebellar artery