Which artery is primarily responsible for blood flow to the frontal lobe of the brain?

The anterior cerebral artery is primarily responsible for supplying blood to the frontal lobe of the brain. It arises from the internal carotid artery and travels along the midline of the brain, branching out to perfuse the medial aspects of the frontal lobes. This area is crucial for various functions, including motor control and higher cognitive functions associated with the frontal lobe.

The middle cerebral artery primarily serves the lateral aspects of the cerebral hemispheres, including parts of the frontal, parietal, and temporal lobes, but it does not have the same primary role in supplying the frontal lobe as the anterior cerebral artery.

The posterior cerebral artery is mainly associated with supplying blood to the occipital lobe and the inferior part of the temporal lobe, which indicates a different vascular territory compared to the anterior cerebral artery.

The vertebral artery contributes to the posterior circulation of the brain, supplying blood primarily to the brainstem and cerebellum, and does not directly supply the frontal lobe.

Hence, the anterior cerebral artery is clearly identified as the key vessel for providing necessary blood flow to the frontal lobe.