Which cranial nerve is associated with the second pharyngeal arch?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $24.99Unlock all

Study for the Pharyngeal Apparatus Test. Dive into multiple choice questions with detailed explanations and hints. Prepare effectively for your exam!

Multiple Choice

Which cranial nerve is associated with the second pharyngeal arch?

Explanation:
The second pharyngeal arch (the hyoid arch) gives rise to muscles of facial expression and other small muscles, with Reichert’s cartilage derivatives forming parts of the hyoid and stapes. The motor innervation to all these muscles comes from the facial nerve (cranial nerve VII). That connection is why this nerve is associated with the second arch. By contrast, the first arch is innervated by the trigeminal nerve (V), the third arch by the glossopharyngeal nerve (IX), and the fourth and sixth arches by the vagus nerve (X).

The second pharyngeal arch (the hyoid arch) gives rise to muscles of facial expression and other small muscles, with Reichert’s cartilage derivatives forming parts of the hyoid and stapes. The motor innervation to all these muscles comes from the facial nerve (cranial nerve VII). That connection is why this nerve is associated with the second arch. By contrast, the first arch is innervated by the trigeminal nerve (V), the third arch by the glossopharyngeal nerve (IX), and the fourth and sixth arches by the vagus nerve (X).

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy