Question 163 · LDEK · Physiology of the masticatory system and occlusion
Which of the following muscles are responsible for the opening movement of the mandible:
- A. masseter muscles, medial pterygoid, posterior digastric muscles.
- B. medial pterygoid, suprahyoid muscles, geniohyoid muscles.
- C. temporalis muscles, lower lateral pterygoid, mylohyoid muscles.
- D. lower lateral pterygoid, mylohyoid muscles, geniohyoid muscles.
- E. upper lateral pterygoid, masseter muscles, mylohyoid muscles.
Hint
Separate elevators from depressors: opening combines a forward pull on the condyle with suprahyoid traction from a stabilised hyoid bone.
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