Which major artery supplies blood directly to the brain?

The internal carotid artery plays a crucial role in supplying oxygen-rich blood to the brain. It branches off from the common carotid artery and ascends into the cranial cavity, where it divides into the anterior and middle cerebral arteries, providing essential blood flow to vital areas of the brain responsible for various functions, including cognition, movement, and sensory processing.

This artery is integral to maintaining the brain's health and function, as the brain requires a continuous supply of oxygen and glucose delivered through the bloodstream. Blockages or interruptions in blood flow from the internal carotid artery can lead to serious neurological problems, including strokes or transient ischemic attacks. The significance of the internal carotid artery in neurology and clinical practice underscores its importance over other arteries listed, which do not directly supply blood to the brain or primarily serve other body regions.