Arteria basilaris

Arteria basilaris is a major blood vessel in the brain that forms from the union of the two vertebral arteries. It is a critical component of the circulatory system, providing oxygenated blood to the brain and other parts of the body.

Anatomy

The arteria basilaris, also known as the basilar artery, is located at the base of the skull. It begins at the level of the pons, a part of the brainstem, and extends upwards to the level of the midbrain. The artery is typically 3-5mm in diameter and about 3cm in length.

Function

The primary function of the arteria basilaris is to supply oxygenated blood to the brain. It does this by branching off into several smaller arteries, including the posterior cerebral arteries, superior cerebellar arteries, and pontine arteries. These arteries in turn supply blood to various parts of the brain, including the cerebellum, brainstem, and occipital lobes.

Clinical significance

Due to its critical role in supplying blood to the brain, any blockage or damage to the arteria basilaris can have serious consequences. Conditions such as basilar artery thrombosis and basilar artery occlusion can lead to stroke, brain damage, and even death.

See also

• Vertebral artery
• Posterior cerebral artery
• Superior cerebellar artery
• Pontine arteries
• Basilar artery thrombosis
• Basilar artery occlusion