Question

Nerves of Branchial arch derived from:

• A. Mesoderm
• B. Endoderm
• C. Neural crest
• D. Neuroectoderm

Answer 1

The Correct Option is C

The nerves of the branchial arches are primarily derived from the neural crest. This is an important aspect in the embryological development where neural crest cells, which originate from the ectoderm, migrate to form many different types of tissues, including most of the peripheral nervous system. The branchial arches, also known as pharyngeal arches, are crucial in the development of the face and neck.

The development process is as follows:

1. The neural crest cells are initially part of the neural tube during embryogenesis.
2. As the neural tube closes, these crest cells migrate to various parts of the embryo.
3. Specifically, they migrate to the regions of the head and neck to participate in the formation of craniofacial structures, including the nerves.
4. In the branchial arches, they contribute to the sensory and motor components of cranial nerves.

Thus, the correct option, representing the origin of the nerves of the branchial arches, is the neural crest.