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
Which is not true about cranial dura mater?
assistant
The correct answer is  The periosteal and meningeal layers split to enclose the dural venous sinuses. (Ref: Vishram Singh textbook of clinical neuroanatomy second edition pg 187)