Anterior inferior cerebellar artery

CerebellumArteries.jpg

== Anterior Inferior Cerebellar Artery ==

The anterior inferior cerebellar artery (AICA) is a crucial artery in the human body that supplies blood to the cerebellum. It is one of the three main arteries that provide blood to the cerebellum, the other two being the superior cerebellar artery and the posterior inferior cerebellar artery (PICA).

Anatomy

The AICA typically arises from the basilar artery, which is a major blood vessel located at the base of the brain. The AICA travels along the surface of the pons and then courses around the cerebellopontine angle to reach the cerebellum. It supplies blood to the anterior and inferior parts of the cerebellum, as well as parts of the brainstem.

Function

The primary function of the AICA is to provide oxygenated blood to the cerebellum and brainstem. The cerebellum is responsible for coordinating voluntary movements, balance, and posture. Therefore, the AICA plays a vital role in maintaining these functions by ensuring an adequate blood supply.

Clinical Significance

Occlusion or blockage of the AICA can lead to a condition known as lateral pontine syndrome or AICA syndrome. This condition can result in a variety of symptoms, including vertigo, nausea, vomiting, nystagmus, hearing loss, and facial weakness. It is a type of stroke that affects the areas supplied by the AICA.

Related Structures

• Basilar artery
• Cerebellum
• Brainstem
• Pons
• Superior cerebellar artery
• Posterior inferior cerebellar artery

See Also

• Cerebrovascular system
• Stroke
• Cerebellar arteries