Which of the following statements regarding middle constrictor muscle is wrong__________________?

Correct answer: D. Is a derivative of the second pharyngeal arch

  • A. Lies on superior constrictor
  • B. Lymph from it drains in the deep cervical lymph nodes
  • C. Has sensory innervation from vagus
  • D. Is a derivative of the second pharyngeal arch

Explanation

The middle constrictor is derived mainly from the fourth and sixth pharyngeal arches, not the second arch. Its motor supply is through the vagus via the pharyngeal plexus, making option d the wrong statement.

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