Southern Illinois University
SSB Index
Nervous Tissue

Muscle Tissue

Skeletal Tissue

Cerebral cortex

This pages offers a section across the entire thickness primary motor cortex (Brodmann's area 4). 

For a higher-magnification overview, click on tall image at right.

The glia limitans is the outermost surface of the brain, immediately beneath the pia mater (which is poorly imaged here).

Designation of the cortical layers I, II, III, IV, V, VI is only approximate.  Layers are distinguished by the relative proportions of various cells shapes and fiber distributions; there are no distinct features to serve as "boundaries" for the layers.



Comments and questions:

SIUC / School of Medicine / Anatomy / David King
Last updated:  12 August 2021 / dgk