Basilar Artery Branches

Paramedian

Supply medial third of pons, midbrain

Short circumferential

Supply lateral 2/3 of pons, midbrain

AICA

Anteroinferior cerebellum, floccular nodule, middle cerebellar peduncle, cranial nerves VII, VIII

SCA

Superior cerebellum 

Interpeduncular

Supplies high midbrain and subthalamic

Vertebral Artery Branches

Anterior Spinal

Supplies spinal cord, anterior 2/3

Posterior Spinal

Supplies spinal cord, dorsal columns

PICA

Posterior medulla, inferior cerebellar hemisphere