Question

Pharyngeal arch 1 gives rise to what CN?

Answer 1

Pharyngeal arch 1 is associated with the development of cranial nerves, specifically the trigeminal nerve (CN V) for sensation and motor functions in the face, and the facial nerve (CN VII) for facial expressions.

Step-by-step explanation:

The pharyngeal arch 1, also known as the first branchial arch, gives rise to the cranial nerves responsible for various sensory and motor functions of the head and neck. Specifically, the first pharyngeal arch is associated with the development of two important cranial nerves:

• The trigeminal nerve (Cranial Nerve V), which is responsible for sensation in the face and certain motor functions such as biting and chewing.
• The facial nerve (Cranial Nerve VII) for the muscles of facial expression.

These nerves are essential for multiple facets of sensory perception and facial movement, underscoring the significance of the pharyngeal arches in human development.