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

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』》

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/01/24 19:30:32」(JST)

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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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English Journal

[Part of the vertebral artery in patients with sudden deafness].

Song Y, Lv F, Cai H, Wu H.Author information Department of Otorhinolaryngology, People' s Hospital, Qinghai Province, Xining, 810005, China. 497700427@qq.comAbstractOBJECTIVE: To explore the characteristics of vertebral artery system in the patients with sudden deafness by using digital subtraction angiography (DSA ).
Lin chuang er bi yan hou tou jing wai ke za zhi = Journal of clinical otorhinolaryngology, head, and neck surgery.Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi.2013 Aug;27(16):905-7.
OBJECTIVE: To explore the characteristics of vertebral artery system in the patients with sudden deafness by using digital subtraction angiography (DSA ).METHOD: Thirty-four cases of sudden deafness with vertebrobasilar artery ischemia confirmed by the color dopplar ultrasound were undergone DSA in
PMID 24260870

[Cerebellar infarction in vascular teritorry of arteria cerebelli superior].

Savić D, Savić L.Author information Klinika za neurologiju, Klinicki centar Nis. sava@bankerinter.netAbstractINTRODUCTION: Cerebellar vascular diseases are focal cerebrovascular diseases in posterior circulation--vertebrobasilar system. The cerebellum is supplied by three main arteries arising from the vertebrobasilar system: arteria cerebelli inferior posterior, arteria cerebelli inferior anterior and arteria cerebelli superior. Cerebelar infarctions are rare but unpredictable disorders. The aim of this study was determination of main risk factors, clinical presentation and prognosis of the cerebellar infarctions in distal vascular teritorry of the arteria cerebelli superior.
Medicinski pregled.Med Pregl.2010 Jan-Feb;63(1-2):27-32.
INTRODUCTION: Cerebellar vascular diseases are focal cerebrovascular diseases in posterior circulation--vertebrobasilar system. The cerebellum is supplied by three main arteries arising from the vertebrobasilar system: arteria cerebelli inferior posterior, arteria cerebelli inferior anterior and art
PMID 20873306

Typical and atypical neurovascular relations of the trigeminal nerve in the cerebellopontine angle: an anatomical study.

Rusu MC, Ivaşcu RV, Cergan R, Păduraru D, Podoleanu L.Author information Department of Anatomy and Embryology, Faculty of Dental Medicine, University of Medicine and Pharmacy Carol Davila, 8 Bd. Eroilor Sanitari, Bucharest, Romania. anatomon@gmail.comAbstractThe aim of the present study was to anatomically evaluate in adults the neurovascular trigeminal relations in the cerebellopontine angle (CPA), from a morphological and topographical perspective and thus to improve, detail and debate the pre-existing information, with educational and surgical implications. For the present anatomical study we performed bilateral dissections on 20 human adult skull bases, in formalin-fixed cadavers, at the level of the cerebellopontine angle, using the anatomical superior approach; we also studied 20 additional drawn specimens-cerebellum and brainstems, from autopsied cadavers, in order to better document the vasculature at the trigeminal root entry zone (REZ). The most constant but not exclusive neurovascular relations of the trigeminal nerves were those with the superior cerebellar artery (SCA) and the superior petrosal vein (the petrosal vein of Dandy). The regular possibility for the SCA to appear divided into a medial and a lateral branch and these to represent individual trigeminal relations at the level of the pontine cistern or REZ must not be neglected. The petrosal vein tributaries can also represent superior, inferior, or interradicular trigeminal relations. Arterioles emerging from the SCA or the anterior inferior cerebellar artery (AICA) represented trigeminal relations either at the REZ or were coursing between the trigeminal roots. A dissected specimen presented a radicular trigeminal artery emerging from the basilar artery and entering the trigeminal cavum inferior to the nerve. Another specimen presented two bony lamellae superior to the trigeminal nerve at the entrance in the trigeminal cavum-these lamellae were embedded within the lateral border of tentorium cerebelli and the posterior petroclinoid ligament. So we bring here an evidence-based support extremely useful not only for specialists dealing with this area but also for educational purposes. It appears important not only to consider the typical anatomy at this level but also to take into account the atypical and hardly predictable morphologies that may alter the diagnoses and the specific surgical procedures.
Surgical and radiologic anatomy : SRA.Surg Radiol Anat.2009 Aug;31(7):507-16. doi: 10.1007/s00276-009-0472-4. Epub 2009 Feb 12.
The aim of the present study was to anatomically evaluate in adults the neurovascular trigeminal relations in the cerebellopontine angle (CPA), from a morphological and topographical perspective and thus to improve, detail and debate the pre-existing information, with educational and surgical implic
PMID 19214365

「前下小脳動脈」

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)
Details
Latin	Arteria cerebelli inferior anterior
Supplies	Cerebellum
Source	Basilar artery
Branches	Labyrinthine artery
Vein	Inferior cerebellar veins
Identifiers
Gray's	p.580
TA	A12.2.08.019
FMA	FMA:50544
	Anatomical terminology