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 inner wall of the tubule is highly calcified and termed as
assistant
The correct answer is  Dentin is made up of dentinal tubules. The dentinal tubules contain the protoplasmic process of the odontoblasts called odontoblastic process. The inner wall of the tubule is highly calcified and is termed as peritubular or intratubular dentin. Between the tubules is the intertubular dentin and it is calcified to a lesser degree than peritubular dentin.