Which type of cell is produced by the ventricular layer as the third cell type?

Which type of cell is produced by the ventricular layer as the third cell type?

• A. Neurons
• B. Ependymal cells
• C. Oligodendrocytes
• D. Astrocytes

Answer: (B)

Neural progenitor cells in the ventricular layer generate cells in a sequential pattern as development proceeds. Early on, they produce neurons that migrate to form brain circuits. After neurogenesis, the same progenitors switch to gliogenesis, giving rise to glial cells such as astrocytes and oligodendrocytes that support and insulate neurons. Finally, the cells differentiate into ependymal cells that line the ventricles and central canal. So the third cell type produced by the ventricular layer is the ependymal cells that line the ventricular system.

Neural progenitor cells in the ventricular layer generate cells in a sequential pattern as development proceeds. Early on, they produce neurons that migrate to form brain circuits. After neurogenesis, the same progenitors switch to gliogenesis, giving rise to glial cells such as astrocytes and oligodendrocytes that support and insulate neurons. Finally, the cells differentiate into ependymal cells that line the ventricles and central canal. So the third cell type produced by the ventricular layer is the ependymal cells that line the ventricular system.