where does the middle cerebral artery supply blood to
1 Left Internal Carotid Artery or Middle Cerebral Artery: These arteries supply blood to much of the left side of the brain. 2  When these arteries are blocked, symptoms might include right body weakness, trouble communicating, right body numbness and loss of vision on a portion of the right side of space. Right Internal Carotid Artery or Middle Cerebral Artery: These arteries supply blood to much of the right side of the brain.