This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head and neck, Subject name: Anatomy
[{'content': 'Preganglionic supply to the submandibular gland is \nSelect and explain. \nA. Otic ganglion, B. Geniculate ganglion, C. Superior salivary nucleus, D. Inferior salivary nucleus', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The sensory root is from the lingual nerve. It is suspended by two roots of lingual nerve.The sympathetic root is from the sympathetic plexus around the facial aery. This plexus contains postganglionic fibers from the superior cervical ganglion of the sympathetic trunk. These fibers pass express through the ganglion and are vasomotor to the submandibular glandThe secretomotor root is from superior salivatory nucleus through nervous intermedius chords tympani which is a branch of cranial nerve VII. Chorda tympani joins lingual nerve. The parasympathetic fibers get relayed in the submandibular ganglion.Ref: BD Chaurasia; volume 3; 6th edition; Page no: 308', 'role': 'assistant'}]