Position and movement of articular disc of TMJ is controlled by fibers of_____________?
Correct answer: C. Upper head of lateral pterygoid muscle
- A. Lower head of lateral pterygoid muscle
- B. Sphenomandibular ligament
- C. Upper head of lateral pterygoid muscle
- D. Superficial head of medial pterygoid muscle
Explanation
The superior head of the lateral pterygoid inserts into the capsule and articular disc, helping control the disc during translation and rotation. The inferior head mainly inserts into the neck of the condyle and assists mandibular depression.
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