Dilip raj, a 44 years old man with a long history of chewing tobacco underwent a tonsillectomy procedure. Following the procedure, he is unable to detect taste on posterior one-third of his tongue. Which of the following nerves has most likely injured?
a) Lingual nerve
b) Glossopharyngeal nerve
c) Greater palantine nerve
d) Chorda tympani
• Posterior one-third of tongue receives both general and taste innervation from the lingual branch of glossopharyngeal nerve
• General sensation of the anterior two-thirds of the tongue is due to lingual nerve
• Taste sensation of the anterior two-thirds of the tongue is due to chorda tympani