This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head and neck, Subject name: Anatomy
Modiolus is directed 
Select and explain. 
A. Anterolateral-inferior, B. Anterolateral-superior, C. Posteromedial-inferior, D. Posteromedial-superior
A: Anterolateral-inferior
Answer: A: Anterolateral-inferior 
Explanation: The bony cochlea resembles the shell of a common snail. It forms the anterior pa of the labyrinth. It has a conical central axis known as the modiolus around which the cochlear canal makes two and three quaer turns. The modiolus is directed forwards ( anteriorly ) and laterally.