Which tissue is correctly identified as contributing to skull formation through neural crest derivatives?

Which tissue is correctly identified as contributing to skull formation through neural crest derivatives?

• A. Paraxial mesoderm
• B. Neural crest cells
• C. Endoderm
• D. Lateral plate mesoderm

Answer: (B)

Neural crest cells are the key source for much of the skull, especially the craniofacial skeleton. They form at the border of the neural plate, undergo epithelial-to-mesenchymal transition, and migrate into the craniofacial region where they differentiate into osteoblasts and chondrocytes that build bones and cartilage of the face and much of the skull. This neural crest–derived mesenchyme explains why craniofacial bones and many skull structures arise from these cells. While other tissues contribute to skull development in some regions, the involvement of neural crest derivatives is what makes this tissue the correct answer.

Neural crest cells are the key source for much of the skull, especially the craniofacial skeleton. They form at the border of the neural plate, undergo epithelial-to-mesenchymal transition, and migrate into the craniofacial region where they differentiate into osteoblasts and chondrocytes that build bones and cartilage of the face and much of the skull. This neural crest–derived mesenchyme explains why craniofacial bones and many skull structures arise from these cells. While other tissues contribute to skull development in some regions, the involvement of neural crest derivatives is what makes this tissue the correct answer.