What artery supplies blood to the brain?

The carotid artery is the main artery that supplies blood to the brain. It branches into the internal and external carotid arteries, with the internal carotid artery being particularly crucial as it provides blood directly to the brain's cerebral hemispheres. This blood supply is essential for delivering oxygen and essential nutrients to the brain tissue, supporting its various functions, including cognitive processes and motor control.

In contrast, the coronary artery is responsible for supplying blood to the heart muscle, not the brain itself. The subclavian artery primarily supplies blood to the shoulders and upper limbs, while the femoral artery supplies blood to the lower limbs. Each of these arteries has a distinct role in the circulatory system, ensuring that specific regions of the body receive adequate blood flow according to their needs.