Cerebral circulation refers to the blood flow in the brain and central nervous system. This circulation is crucial for delivering oxygen and nutrients to brain cells while removing waste products. The cerebral arteries supply blood to the brain, while the cerebral veins drain it away, ensuring proper brain function. The primary arteries involved in cerebral circulation include the internal carotid arteries and the vertebral arteries. These arteries form a network known as the Circle of Willis, which provides alternative pathways for blood flow. This redundancy helps protect the brain from ischemia, a condition caused by insufficient blood supply.