Agranular cortex is a
cytoarchitecturally defined term denoting the type of
heterotypic cortex that is distinguished by its relative thickness and lack of
granule cells
A granule is a large particle or grain. It can refer to:
* Granule (cell biology), any of several submicroscopic structures, some with explicable origins, others noted only as cell type-specific features of unknown function
** Azurophilic granul ...
. Examples are
Brodmann area 30
Brodmann area 30, also known as agranular retrolimbic area 30, is a subdivision of the cytoarchitecturally defined retrosplenial region of the cerebral cortex. In the human it is located in the isthmus of cingulate gyrus. Cytoarchitecturally it ...
, the
agranular insula, and the
precentral gyrus
The precentral gyrus is a prominent gyrus on the surface of the posterior frontal lobe of the brain. It is the site of the primary motor cortex that in humans is cytoarchitecturally defined as Brodmann area 4.
Structure
The precentral gyrus l ...
, the site of the primary motor cortex.
An area of cortex that is only slightly granulated is termed dysgranular.
References
Cerebral cortex
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