<prompt> Arch of aorta is derived from:2nd aortic arch3rd aortic arch3rd pharyngeal arch4th pharyngeal arch  <response>: Ans. D 4th pharyngeal archRef: Grays Anatomy, 4V ed. pg. 607DERIVATIVES OF THE PHARYNGEAL ARCHESArch numberArch nameEmbryonic cartilageCartilage derivativeMuscleNerveArtery1MandibularQuadrate MeckelsIncusMalleusAnterior ligament of malleus Spine of sphenoidSphenomandibular ligamentGenial tubercle of mandibleTensor tympani Muscles of mastication MylohyoidAnterior belly of digastricTensor veli palatineTrigeminal VMandibular divisionFirst aortic arch artery transitory2HyoidReicherts Stapes Styloid process of temporal bone Styloid process of temporal bone Stylohyoid ligament Lesser horn and upper part of body of hyoid boneStapedius Stylohyoid muscle Facial muscles, include. Buccinator Platysma Posterior belly digastricFacial VIIStapedial artery transitory3Third Greater horn and lower part of body of hyoid boneStylopharyngeusGlossopharyngeal IXCommon carotid artery4Fourth Thyroid cartilageCorniculate cartilageCuneiform cartilagePharyngeal and extrinsic laryngeal muscles, levator veli palatiniVagus XPharyngeal branch Proximal part of subclavian artery on the right Arch of aorta between origins of left common carotid and left subclavian arteries6Sixth Arytenoid cartilagesIntrinsic laryngeal musclesVagus XRecurrent laryngeal branchPart between the pulmonary trunk and dorsal aorta becomes ductus arteriosus on left, disappears on right 