Which artery is a single midline artery formed from the fusion of left and right vertebral arteries and located at the bottom of the pons?

Which artery is a single midline artery formed from the fusion of left and right vertebral arteries and located at the bottom of the pons?

• A. Basilar Artery
• B. Posterior cerebral artery
• C. Superior cerebellar artery
• D. Anterior inferior cerebellar artery

Answer: (A)

The fused vertebral arteries form a single midline vessel that runs along the ventral surface of the brainstem at the lower part of the pons—the basilar artery. This artery originates where the two vertebral arteries join and then travels upward, supplying the pons and cerebellum through its branches before it splits into the posterior cerebral arteries. This description directly aligns with the basilar artery.

The fused vertebral arteries form a single midline vessel that runs along the ventral surface of the brainstem at the lower part of the pons—the basilar artery. This artery originates where the two vertebral arteries join and then travels upward, supplying the pons and cerebellum through its branches before it splits into the posterior cerebral arteries. This description directly aligns with the basilar artery.