1. It is the branch of common carotid artery.
2. ICA divide into four parts (From neck to head)-
a. Cervical part
b. Petrous part
c. Cavernous part
d. Cerebral part
In the blood supply of brain we study only 4th / cerebral part and it’s branches.
NOTE: Both vertebral, and Internal carotid artery are divided into four parts (from neck to head).
Branches of cerebral part of ICA-
1. Anterior cerebral artery (ACA)
2. Middle cerebral artery (MCA)
3. Posterior communicating artery
4. Ophthalmic artery– Supply to the eye ball.
5. Anterior choroidal artery– Supply to the choroidal plexus.