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Oral Surgery · single question

Which muscle does NOT elevate the mandible?

  1. Medial pterygoid
  2. Masseter
  3. Lateral pterygoid
  4. Temporalis
Show answer and explanation

Correct answer: C. Lateral pterygoid

  • A. The medial pterygoid (with masseter) forms the 'muscular sling' and ELEVATES the mandible (closes the mouth).
  • B. The masseter is the primary elevator of the mandible.
  • C. Correct. The LATERAL pterygoid muscle DOES NOT elevate the mandible. Its primary action is to protract the mandible and assist in opening (depression of the condyle). The inferior head opens the mouth; the superior head stabilizes the condyle during closure/chewing.
  • D. The temporalis (especially vertical/posterior fibers) ELEVATES the mandible.

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