This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Neuroanatomy, Head and Neck, Subject name: Anatomy
General sensation and taste sensation to the posterior one third of the tongue is mediated by: 
Select and explain. 
A. Hypoglossal nerve and glossopharyngeal nerve, B. Vagus only, C. Glossopharyngeal nerve only, D. Lingual nerve and facial
C: Glossopharyngeal nerve only
Answer: C: Glossopharyngeal nerve only 
Explanation: Sensory supply of tongue : Anterior 2/3rd ( from 1st arch) Posterior 1/3rd (from 3rd arch ) From the valeculla (from 4th arch) General sensations Via Lingual nerve Glossopharyngeal nerve Internal laryngeal branch of superior laryngeal nerve (vagus) Special sensations Except circumvallate papillae chorda tympani (facial nerve) Including circumvallate papillae glossopharyngeal nerve Internal laryngeal branch of superior laryngeal nerve (vagus)