Practice Quiz

ADA NBDHE Dental Hygienist

Category - Scientific Basis for Dental Hygiene Practice

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What originates from the temporal fossa and inserts on the coroniod process of the mandible?
  1. Temporalis muscle
  2. Masseter muscle
  3. Medial pterygoid muscle
  4. Buccinator muscle
Explanation
Answer: A - The temporalis muscle originates from the temporal fossa and inserts on the coroniod process of the mandible. When the entire muscle contracts, it elevates the mandible, raising the jaw. If only the posterior portion contracts, it causes retraction of the mandible.
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