This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
[{'content': 'In complete unilateral damage to hypoglossal nerve, all are true EXCEPT: \nSelect and explain. \nA. Tongue atrophy on affected side, B. Deviation of tongue towards the site of lesion, C. Deviation of larynx to the contralateral side during swallowing, D. Loss of tactile sensation on affected side', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Tactile sensation of tongue is not carried by the hypoglossal nerve, hence there will be no loss of\xa0tactile sensation on the tongue.\nHypoglossal nerve is a pure motor nerve and supplies the tongue muscles.\nIt also carries the C1 ﬁbres to supply the two muscles of hyoid bone: Geniohyoid and thyrohyoid.\nLesion of the hypoglossal nerve causes unilateral lingual paralysis and eventual hemiatrophy.\xa0\nThe protruded tongue deviates to the paralysed side and the larynx may deviate towards the\xa0active side during swallowing.\n\nKey Concept\nTactile sensation of tongue is not carried by the hypoglossal nerve, hence there will be no loss of\xa0tactile sensation on the tongue. Hypoglossal nerve is a pure motor nerve and supplies the tongue muscles.', 'role': 'assistant'}]