Anatomy · Developmental Signalling and Molecular Embryology (HOX, SHH, Neural Crest)

Neural crest cells are pluripotent migratory cells derived from the dorsal neural tube. Which of the following is NOT a neural crest derivative?

  • A Dorsal root ganglia
  • B Chromaffin cells of the adrenal medulla
  • C Notochord
  • D Melanocytes of the skin
Correct answer: C. Notochord

Explanation

The notochord is derived from the primitive node (epiblast cells migrating through the node during gastrulation) and is a mesodermal/axial structure that later induces the neural plate. It is NOT a neural crest derivative. Neural crest cells give rise to: dorsal root and autonomic ganglia, Schwann cells, melanocytes, chromaffin cells of the adrenal medulla, C-cells (parafollicular cells) of the thyroid, craniofacial cartilage and bone, cardiac outflow tract septation cells, and many others.

Reference: BD Chaurasia's Human Anatomy, 8th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.

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