Anatomy Smiling and frowning are actions produced by the following nerves: A Mastication; trigeminal (V cranial) B Mastication; facial (VII cranial) C Facial expression; trigeminal (V cranial) D Facial expression; facial (VII cranial) 💡 Explanation Smiling and frowning are actions produced by the following nerves: ✓ Correct Answer: D. Facial expression; facial (VII cranial)