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
The sinus occupying coronary sulcus is derived from which of the following?
assistant
The correct answer is  The coronary sinus occupies coronary sulcus. The coronary sinus is derived from theleft horn of sinus venosus.