The cerebellar cortex, which coordinates muscular
activity throughout the body, also has a layered organization
an outer molecular layer, a central layer of
very large neurons called Purkinje cells (named for the 19th
century Czech histologist Jan Purkinje), and an inner gran-
ule layer. The Purkinje cell bodies are conspicuous and their dendrites extend through-
out the molecular layer as a branching basket of nerve fibers
The granule layer is formed by very small
neurons (with diameters of only 4-5 mm), which are packed
together densely, in contrast to the neuronal cell bodies in the
molecular layer which are sparse

Sources Junqueiras Basic histology text and atlas 13th ed.