Which of the following arteries contributes to the anterior circulation of the brain?
anterior inferior cerebellar artery
basilar artery
anterior cerebral artery
vertebral arteries
superior cerebellar artery
dsgagarh
The arteries that contribute to the anterior circulation of the brain are the anterior cerebral artery and the anterior inferior cerebellar artery.
To determine which of the listed arteries contributes to the anterior circulation of the brain, we can break down each option and analyze its role in blood supply.
1. Anterior inferior cerebellar artery (AICA): This artery primarily supplies blood to the structures of the posterior inferior cerebellum and does not contribute to the anterior circulation of the brain.
2. Basilar artery: The basilar artery is formed by the fusion of the two vertebral arteries at the base of the skull. While it plays a crucial role in the blood supply to the posterior circulation of the brain, it does not directly contribute to the anterior circulation.
3. Anterior cerebral artery (ACA): The ACA is one of the major arteries contributing to the anterior circulation of the brain. It supplies blood to the medial aspects of the superior frontal lobe and part of the parietal lobe.
4. Vertebral arteries: The vertebral arteries are responsible for supplying blood to the posterior circulation of the brain. They join together to form the basilar artery but do not contribute to the anterior circulation.
5. Superior cerebellar artery: The superior cerebellar artery is another branch of the basilar artery and supplies the superior surface of the cerebellum, not the anterior circulation.
Based on this analysis, the correct answer is the anterior cerebral artery (ACA).