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
True about great cerebral vein of galen
assistant
The correct answer is  Great cerebral vein constitutes deep vein system of brain. It drains into straight sinus.
Thalamostriate vein and choroidal vein join to form internal cerebral vein (deep cerebral vein).