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
Two point threshold test, tests the integrity of:
assistant
The correct answer is  Dorsal column (medial lemniscal system): Fibres mediating fine touch, fine pressure, two point discrimination, proprioception, joint position sense and vibration ascends in the dorsal column. Ref: Ganong's Review of medical physiology, 22 Edition, Page 138.