Which bony landmark provides attachments for the temporalis muscle?

Which bony landmark provides attachments for the temporalis muscle?

• A. Condylar head
• B. Ramus
• C. Mental foramen
• D. Coronoid process

Answer: (D)

The key idea is where the temporalis muscle attaches to the mandible. The temporalis originates from the temporal fossa and its tendon runs beneath the zygomatic arch to insert on the coronoid process of the mandible. That coronoid process is the triangular projection on the superior, anterior part of the ramus and serves as the primary insertion point for temporalis. From this position, the muscle elevates the mandible (closing the jaw) and, via its posterior fibers, can help pull the mandible backward. The other landmarks don’t provide the muscle’s attachment: the condylar head is involved in the TMJ articulation, the mental foramen is a nerve passage in the anterior mandible, and the ramus is the broader vertical part of the mandible containing the coronoid process.

The key idea is where the temporalis muscle attaches to the mandible. The temporalis originates from the temporal fossa and its tendon runs beneath the zygomatic arch to insert on the coronoid process of the mandible. That coronoid process is the triangular projection on the superior, anterior part of the ramus and serves as the primary insertion point for temporalis. From this position, the muscle elevates the mandible (closing the jaw) and, via its posterior fibers, can help pull the mandible backward. The other landmarks don’t provide the muscle’s attachment: the condylar head is involved in the TMJ articulation, the mental foramen is a nerve passage in the anterior mandible, and the ramus is the broader vertical part of the mandible containing the coronoid process.