All are elevators of mandible except
Correct Answer: Digastric
Description: Digastric muscle has two bellies united by an intermediate tendon ORIGIN- a.Anterior belly from digastric fossa of mandible b.Posterior belly from mastoid notch of temporal bone INSEION-Both heads meet at the intermediate tendon which perforates SH and is held by a fibrous pulley to the hyoid bone NERVE SUPPLY- a.Anterior belly by nerve to mylohyoid b.Facial nerve ACTIONS- a. Depress mandible when mouth is opened widely or against resistance; it is secondary to lateral pterygoid b.Elevates hyoid bone Ref BDC volume 3,sixth edition pg 132
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