INBDE (Integrated National Board Dental Examination) Practice Exam

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The carotid body sends information to the brain via what cranial nerve?

  1. VII

  2. IX

  3. X

  4. XI

The correct answer is: IX

The carotid body is an organ in the carotid artery that helps control respiration, blood pressure, and other vital functions. It sends information to the brain via the glossopharyngeal nerve (cranial nerve IX). The other options listed are incorrect because A) The facial nerve (cranial nerve VII) primarily controls facial muscles and taste, not sensory information from the carotid body. C) The vagus nerve (cranial nerve X) primarily controls heart rate and digestion, not sensory information from the carotid body. D) The spinal accessory nerve (cranial nerve XI) primarily controls neck and shoulder movement, not sensory information from the carotid body.

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