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What is the chief sensory nerve of the face, responsible for transmitting facial sensations to the brain and controlling muscles movements of chewing?

  1. Vagus nerve

  2. Trifacial nerve

  3. Olfactory nerve

  4. Glossopharyngeal nerve

The correct answer is: Trifacial nerve

The chief sensory nerve of the face is known as the Trigeminal or Trifacial nerve, making option B the correct choice. This nerve is responsible for transmitting sensations from the face to the brain, as well as controlling the movements of facial muscles used in chewing. The Vagus nerve (option A) is responsible for controlling the throat muscles and some of the organs in the chest and abdomen. The Olfactory nerve (option C) is responsible for transmitting senses of smell, and the Glossopharyngeal nerve (option D) is responsible for transmitting senses of taste and controlling muscles in the throat. Therefore, options A, C, and D are incorrect as they are not associated with the function described in the question.