Final answer:
The anterior communicating artery connects the right and left anterior cerebral arteries and supplies blood to the frontal lobe of the cerebrum.
Step-by-step explanation:
The anterior communicating artery is formed by the junction of the right and left anterior cerebral arteries. It is part of the arterial circle, which is an anastomosis that supplies blood to the brain. The anterior communicating artery is responsible for connecting the two anterior cerebral arteries and ensuring proper blood flow to the frontal lobe of the cerebrum.