This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Facial Nerve and its disorders, Subject name: ENT
Which is called nerve of Wrisberg 
Select and explain. 
A. Motor root of facial nerve, B. Tympanic branch of glossopharyngeal nerve, C. Sensory root of facial nerve, D. Greater auricular nerve
C: Sensory root of facial nerve
Answer: C: Sensory root of facial nerve 
Explanation: Facial nerve runs from pons to parotid. It is a mixed nerve having motor and a sensory root. The latter is also called the nerve of Wrisberg and carries secretomotor fibres to lacrimal gland and salivary glands, and brings fibres of taste and general sensation. Nerve of Wrisberg (Nervus intermedius receives fibres from Nucleus tractussolitarious and Nucleus salivatorius superioris Motor fibres take origin from the nucleus of VIIth nerve, hook round the nucleus of VIth nerve and are joined by the sensory root (nerve of Wrisberg).