<prompt> Which of the following is first pharyngeal arch muscle ?anterior belly of digastricbuccinatorplatysmaposterior belly of digastric  <response>: I Arch-- Mandibular Meckels cailage -Malleus, Incus ,Mandible,maxilla, zygomatic , palatine, temporal , antererior ligament of malleus, sphenomandibular ligament. II Arch--Hyoid Reiches cailage - stapes , styloid process , lesser cornu of hyoid , upper half of body of hyoid . III Arch - Greater cornu of hyoid , lower half of body of hyoid. IV VI Arches -thyroid, cricoid , corniculate , cuneiform, arytenoid , thyrohyoid ligament , Epiglottis. Ref : Inderbir Singhs Human Embryology, eleventh edition , pg. no., 129. 