<prompt> Which of the suprahyoid muscle is supplied by both facial nerve and mandibular nerve -StylohyoidMylohyoidDigastricHyuglossus  <response>: Ans, is c i.e., Digastric o Anterior belly of digastric is supplied by nerve to myelohyoid a branch of mandibular nerve and posterior belly is supplied by facial nerve. Suprahyoid musclesMuscle1. Digastric DGhas two belliesOrigina Anterior belly DGA from digastric fossa of mandibleb Posterior belly DGP from mastoid notch of temporal boneFibresa Anterior belly runs downwards and backwardsb Posterior belly runs downwards and forwardsInsertionBoth heads meet at the intermediate tendon which perforates SH and is held by a fibrous pulley to the hyoid boneNerve supplyAnterior belly by nerve to mylohyoidFacial nerveActionsa Depresses mandible when mouth is opened widely or against resistance; it is secondary to lateral pterygoidb Elevates hyoid bone2.Stylohyoid SH.Posterior surface of styloid processTendon is perforated by DGP tendonJunction of body and greater cornua of hyoid boneFacial nervea Pul Is hyoid bone upwards and backwardsb with other hyoid muscles, it fixes the hyoid bone3.Mylohyoid MH Flat triangular muscle; two mylohoids form floor of mouth cavity.Mylohyoid line of mandibleFibers run medially and slightly downwardsa Posterior fibers; body of hyoid boneb Middle and anterior fibers; median raphe, between mandible and hyoid boneNerve to mylohyoida Elevates floor of mouth in first stage of deglutitionb Helps in depression of mandible, and elevation of hyoid bone4. Gemohyoid GH.Inferior mental spine genial tubercleRuns backwrds and downwardsAnterior surface of body of hyoid boneCl through hypoglossal nervea Elevates hyoid boneb May depress mandible when hyoid is fixed5. Hyoglossus. It is a muscle of tongue.Whole length of greater cornua and lateral part of body of hyoid boneFibers run upwards and forwardsSide of tongue between styloglossus and inferior longitudinal muscle of tongueHypoglossal XII nerveDepresses tongue makes dorsum convex retracts the protruded tongue 