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
Isolated hypoglossal nerve injuries are rare. If there is unilateral injury to hypoglossal nerve, all of the clinical manifestations are seen, EXCEPT: 
Select and explain. 
A. Hemiatrophy of involved side, B. Detion of tongue towards the same side, C. Loss of taste sensation in one half of the tongue, D. Fasciculation of the tongue
C: Loss of taste sensation in one half of the tongue
Answer: C: Loss of taste sensation in one half of the tongue 
Explanation: In hypoglossal nerve lesions, there may be detion of the protruded tongue toward the weak side. Denervation of the tongue may be associated with wasting (atrophy) and twitching (fasciculation).Taste sensations are carried by the chorda tympani branch of the facial nerve from anterior two third of tongue and glossopharyngeal nerve from posterior one third of tongue. Ref: Greenberg D.A., Aminoff M.J., Simon R.P. (2012). Chapter 1. Neurologic History & Examination. In D.A. Greenberg, M.J. Aminoff, R.P. Simon (Eds), Clinical Neurology, 8e.