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What is True about vagal nuclei are all except- and explain in detail?
Ans. is 'd' i.e., Spinal trigeminal nucleus is not a vagal nucleus * The vagus nerve includes axons which emerge from or converge onto four nuclei of the medulla. They are present deep in the medulla in the floor of the 4th ventricle.* These nuclei are:-1. The dorsal nucleus of vagus nerve -- which sends parasympathetic output to the viscera, especially the intestines2. The nucleus ambiguus -- which gives rise to the branchial efferent motor fibers of the vagus nerve and preganglionic parasympathetic neurons that innervate the heart3. The solitary nucleus -- which receives afferent taste information and primary afferents from visceral organs4. The spinal trigeminal nucleus -- which receives information about deep/crude touch, pain, and temperature of the outer ear, the dura of the posterior cranial fossa and the mucosa of the larynx