The internal carotid arteries are major blood vessels that supply oxygen-rich blood to the brain. They branch off from the common carotid arteries, which are located on each side of the neck. These arteries travel upward and enter the skull through the carotid canal, where they further divide into smaller branches that nourish different parts of the brain. These arteries play a crucial role in maintaining brain function and health. Any blockage or narrowing in the internal carotid arteries can lead to serious conditions, such as a stroke. Regular monitoring and management of cardiovascular health are important to ensure proper blood flow through these vital vessels.