Palatoglossus develops from:
(A) Occipital myotomes (B) Lingual swelling of first arch (C) Third arch (D) Mesoderm of sixth arch
(D) Muscles of tongue develop from occipital myotomes, so the cranial nerve XII (hypoglossal nerve) supplies all intrinsic and three extrinsic muscles. Only palatoglossus is supplied by cranial root of accessory through pharyngeal plexus and is developed from mesoderm of sixth arch.