Which of the following is the Protruder of Jaw?: (A) Lateral Pterygoid, (B) Medial pterygoid, (C) Masseter, (D) Temporalis
Answer is A. (A) Lateral Pterygoid # Lateral Pterygoid Actions:> Depresses the mandible to open the mouth, (with suprahyoid muscles).> Lateral and medial pterygoid muscles of both sides action together protrude the mandible.> Medial & lateral pterygoid muscles of the two sides contract alternately to produce side to side movements of the mandible (as in chewing).