Facial muscles are derived from_________________?
Correct answer: B. 2ndbranchial arch
- A. 1st branchial arch
- B. 2ndbranchial arch
- C. 3rdbranchial arch
- D. 4thbranchial arch
Explanation
The muscles of facial expression develop from the second pharyngeal arch and therefore are supplied by the facial nerve. The first arch instead gives rise to the muscles of mastication.
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