Coronoid Process Insertion — MFDS Part 1 MCQ

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EasyAnatomy (Head & Neck)Coronoid Process InsertionMFDS Part 1

Which muscle forms a prominent tendon that inserts onto the coronoid process of the mandible?

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Correct answer: C — Temporalis

The correct answer is C, temporalis. Its fibres converge into a prominent tendon that attaches to the coronoid process, with attachment extending into the adjacent retromolar and anterior ramus region. Masseter principally inserts onto the lateral ramus and angle; although a deep coronoid part may reach the root and posterior margin of the coronoid process, it is not the prominent coronoid tendon described here. Medial pterygoid inserts on the medial ramus and angle. Lateral pterygoid attaches to the pterygoid fovea and the temporomandibular joint disc and capsule. The anterior belly of digastric attaches to the digastric fossa.

Reference: Yu SK, Kim TH, Yang KY, et al. Morphology of the temporalis muscle focusing on the tendinous attachment onto the coronoid process. Anatomy & Cell Biology. 2021;54(3):308-314. https://pubmed.ncbi.nlm.nih.gov/34863910/