American Board of Orthodontics (ABO) Practice Exam

Question: 1 / 660

Where do CNC cells primarily migrate to populate?

Laterally

Dorsally

Ventrally

Venterolaterally

CNC cells, or cranial neural crest cells, primarily migrate to populate the venterolateral regions during embryonic development. This migration is crucial for the formation of various structures, including the bones and cartilage of the face and skull, as well as ganglia and connective tissues. The venterolateral direction indicates that these cells are moving toward both the ventral (front) and lateral (side) aspects of the developing embryo, which is essential for their role in contributing to the formation of specific anatomical features.

The other directions, such as laterally, dorsally, or ventrally alone, do not encompass the complex migration pathways and contributions that cranial neural crest cells make. Rather, the unique combination of ventral and lateral aspects provides a more accurate representation of where these critical cell populations ultimately reside and differentiate into various structures.

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