Which muscle of mastication inserts at the coronoid process and is responsible for closing the jaw?

The muscle responsible for closing the jaw and inserting at the coronoid process is indeed the temporalis. This fan-shaped muscle is located on the side of the skull and plays a crucial role in mastication (chewing).

When the temporalis contracts, it elevates the mandible (lower jaw) and helps close the mouth. The coronoid process serves as an attachment point for the temporalis muscle, providing a fulcrum around which the jaw can pivot when chewing and grinding food. The muscle is particularly effective in bringing the back teeth together, which is essential for incisive and grinding movements during mastication.

Understanding the role of the temporalis muscle also highlights the overall mechanics of jaw movement and the coordination required between different muscles for effective chewing. This information is fundamental for anyone in the dental field, as it aids in the comprehension of oral anatomy and function, crucial for patient assessment and treatment planning.