Posterior one-third of the tongue develops from: (A) Lingual swellings, (B) Tuberculum impar, (C) Hypobranchial eminence, (D) Tongue bud
Answer is C. Posterior one third is developed from cranial pa of hypobranchial eminence, which is formed by fusion of third and fouh branchial arches only. The eminence is divided by a transverse groove into cranial and caudal pa. Notes: posterior one third is supplied by glossopharyngeal nerve.