06/02/2025
The brain receives blood supply from a network of arteries that arise from the aorta and branch into smaller vessels. Here are the main arteries that supply blood to the brain:
1. *Internal Carotid Artery (ICA)*: Arises from the common carotid artery and enters the cranial cavity through the carotid canal. It supplies blood to the anterior portion of the brain, including the frontal, parietal, and temporal lobes.
2. *External Carotid Artery (ECA)*: Arises from the common carotid artery and supplies blood to the face, neck, and scalp.
3. *Vertebral Artery (VA)*: Arises from the subclavian artery and passes through the foramen magnum to enter the cranial cavity. It supplies blood to the posterior portion of the brain, including the cerebellum and brainstem.
4. *Basilar Artery (BA)*: Formed by the fusion of the two vertebral arteries, it supplies blood to the brainstem, cerebellum, and posterior inferior cerebellar arteries.
5. *Anterior Cerebral Artery (ACA)*: Arises from the internal carotid artery and supplies blood to the medial surface of the frontal and parietal lobes.
6. *Middle Cerebral Artery (MCA)*: Arises from the internal carotid artery and supplies blood to the lateral surface of the frontal, parietal, and temporal lobes.
7. *Posterior Cerebral Artery (PCA)*: Arises from the basilar artery and supplies blood to the occipital lobe and medial temporal lobe.
These arteries are crucial for maintaining proper blood flow to the brain, and any blockages or damage to these vessels can lead to serious neurological consequences.