Posterior communicating aery is branch of
Posterior communicating aery arises close to the termination of internal carotid aery. Other branches of cerebral pa internal carotid aery are: Ophthalmic aery Anterior cerebral aery Middle cerebral aery Anterior choroidal aery Posterior cerebral aery is a branch of basilar aery. (Ref: Vishram Singh textbook of clinical neuroanatomy 2nd edition, pg- 176)
Internal carotid aery
External carotid aery
Middle cerebral aery
Posterior cerebral aery
Brain 