Which tissue type in the cerebellum is white matter?

Which tissue type in the cerebellum is white matter?

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

Answer: (D)

In the cerebellum, white matter is the inner core composed of myelinated axons, forming the arbor vitae that connects the cerebellar cortex with other brain regions. The cortex of the cerebellum is gray matter, organized into three layers: molecular, Purkinje cell, and granular layers, all containing neuron cell bodies and unmyelinated fibers. Because of the myelin, the white matter appears lighter. So the tissue type that is white matter is the central, myelinated fiber tracts of the cerebellum, while the three gray layers lie on the surface.

In the cerebellum, white matter is the inner core composed of myelinated axons, forming the arbor vitae that connects the cerebellar cortex with other brain regions. The cortex of the cerebellum is gray matter, organized into three layers: molecular, Purkinje cell, and granular layers, all containing neuron cell bodies and unmyelinated fibers. Because of the myelin, the white matter appears lighter. So the tissue type that is white matter is the central, myelinated fiber tracts of the cerebellum, while the three gray layers lie on the surface.