Template:BiopSy
Artery: Anterior inferior cerebellar artery | ||
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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 | subject #148 580 | |
Supplies | Cerebellum | |
From | Basilar artery | |
To | Labyrinthine artery | |
Vein | Inferior cerebellar veins | |
MeSH | [1] | |
Dorlands/Elsevier | {{{DorlandsPre}}}/{{{DorlandsSuf}}} |
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 was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.
External links
- SUNY Labs 28:09-0224
- Dictionary at eMedicine anterior+inferior+cerebellar+artery
- http://neuroangio.org/anatomy-and-variants/aica/
- Roche Lexicon - illustrated navigator, at Elsevier 13048.000-1
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).
List of arteries of head and neck | |
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Anterior: CC/EC |
superior thyroid (superior laryngeal) - lingual (sublingual) facial: cervical branches (ascending palatine, tonsillar, submental, glandular) - facial branches (inferior labial, superior labial, lateral nasal, angular) |
Posterior and ascending: CC/EC |
occipital - posterior auricular (stylomastoid) - ascending pharyngeal (meningeal branches) |
Terminal, superficial temporal: CC/EC |
transverse facial - middle temporal (zygomaticoörbital) - anterior auricular - frontal - parietal |
Terminal, maxillary: CC/EC |
1st part: anterior tympanic - deep auricular - middle meningeal (superior tympanic) - accessory meningeal - inferior alveolar (mylohyoid) |
portions #1 and 2: CC/IC |
cervical portion (carotid sinus) - petrous portion (Vidian, caroticotympanic) |
cavernous portion/ophthalmic: CC/IC |
orbital group: lacrimal (lateral palpebral) - supraorbital - posterior ethmoidal - anterior ethmoidal - medial palpebral - supratrochlear - dorsal nasal |
cerebral portion: CC/IC |
ACA - anterior communicating - MCA (anterolateral central) - posterior communicating - anterior choroidal - circle of Willis |
vertebral artery: SC |
meningeal branches - posterior spinal - anterior spinal - PICA - basilar (pontine, labyrinthine, AICA, SCA, PCA) |
thyrocervical trunk: SC |
inferior thyroid (inferior laryngeal, tracheal, esophageal, ascending cervical) - suprascapular - transverse cervical - dorsal scapular |
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