Which cerebellar cortex layer lies directly above the white matter?

Which cerebellar cortex layer lies directly above the white matter?

• A. Molecular layer
• B. Purkinje layer
• C. Granular layer
• D. White matter

Answer: (C)

Cerebellar cortex organization has three layers stacked from the surface inward: molecular layer on the outside, followed by the Purkinje cell layer, and the granular layer on the inside. Beneath all of these lies the white matter, which contains the myelinated fibers. The layer directly atop the white matter is the granular layer, housing many small granule cells (and Golgi cells). These granule cells receive input from mossy fibers and send their axons upward into the molecular layer as parallel fibers to contact Purkinje cell dendrites. This arrangement makes the granular layer the immediate layer above the white matter.

Cerebellar cortex organization has three layers stacked from the surface inward: molecular layer on the outside, followed by the Purkinje cell layer, and the granular layer on the inside. Beneath all of these lies the white matter, which contains the myelinated fibers. The layer directly atop the white matter is the granular layer, housing many small granule cells (and Golgi cells). These granule cells receive input from mossy fibers and send their axons upward into the molecular layer as parallel fibers to contact Purkinje cell dendrites. This arrangement makes the granular layer the immediate layer above the white matter.