Which arteries provide blood to the anterior poles and medial surfaces of the cerebral hemispheres?

The anterior cerebral arteries supply blood to the anterior poles and medial surfaces of the cerebral hemispheres. These arteries branch off from the internal carotid arteries and travel along the longitudinal fissure, providing oxygenated blood to critical regions including the frontal lobes and parts of the parietal lobes.

This blood supply is vital for functions associated with these areas, such as voluntary movement, reasoning, and judgment, as well as sensory perception from the lower limbs. The distribution of the anterior cerebral arteries ensures that the medial and superior cortical regions have a reliable source of blood flow, enhancing their functioning.

Understanding the vascular supply of the brain is crucial in neuroanatomy, especially when assessing conditions like strokes or other vascular disorders that may affect specific brain functions.