Intrinsic muscles of the tongue are derived from ?
2nd branchial cleft
Pharyngeal arch mesenchyme
Occipital somites
Cervical somites
The occipital somites (four to five) give rise to muscles of the tongue. The tongue's embryonic origin is derived from first 4 pharyngeal arches contributing different components. Anterior 2/3rd or body of tongue is derived from 3 lingual buds the median tongue bud (tuberculum impar) and 2 lateral lingual swellings developing at each side of the median tongue bud. 2/3rd of the tongue originates from the first pharyngeal arch. Sensory innervation to this area is by the mandibular branch of the trigeminal nerve. (Taste sensation to the anterior 2/3rd of the tongue is provided by the chorda tympani branch of the facial nerve). Post 1/3rd or root of the tongue is formed from two median elevations. Ref: Human Embryology INDERBIR SINGH 6th Ed Page 98,156.