system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Posterior communicating aery connects
assistant
The correct answer is  Posterior communicating aery connects the internal carotid aery with posterior cerebral aery.(Ref: Vishram Singh textbook of clinical neuroanatomy second edition pg 172)