Which layer lies directly between the molecular and granular layers?

Which layer lies directly between the molecular and granular layers?

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

Answer: (D)

The cerebellar cortex has three main layers arranged from outer to inner: molecular layer, Purkinje cell layer, and granular layer. The layer that sits directly between the molecular layer above and the granular layer below is the Purkinje cell layer, which contains a single row of Purkinje neuron bodies. These Purkinje cells have expansive apical dendrites reaching into the molecular layer to receive synaptic input, and their axons project to the deep cerebellar nuclei. The granular layer lies beneath and is packed with small granule cells and interneurons, while the white matter is deeper still, consisting of myelinated fibers.

The cerebellar cortex has three main layers arranged from outer to inner: molecular layer, Purkinje cell layer, and granular layer. The layer that sits directly between the molecular layer above and the granular layer below is the Purkinje cell layer, which contains a single row of Purkinje neuron bodies. These Purkinje cells have expansive apical dendrites reaching into the molecular layer to receive synaptic input, and their axons project to the deep cerebellar nuclei. The granular layer lies beneath and is packed with small granule cells and interneurons, while the white matter is deeper still, consisting of myelinated fibers.