Cerebral Cortex Histology

Cerebral Cortex Histology - Brain & Cranial Nerves...

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Cerebral Cortex Histology * (1) Plexiform layer (molecular layer)- mostly fibers running parallel to surface, neuroglial cells, and a few horizontal cells of Cajal * (2) Outer granular cell layer; small pyramidal cells (stellate cells) * (3) a layer of medium pyramidal cells * (4) Inner granular layer; many small granule cells (stellate cells) * (5) Large pyramidal cells (Betz cells) * (6) a layer of polymorphic cells- cells with diverse shapes (fusiform cells) Pyramidal cells- * recognized by their relatively large somata and by their prominent apical dendrites (i.e., the upward "apex" on the "pyramid"). * "owl-eye" or "fried-egg" nuclei. * The giant Betz cells are extremely large pyramidal cells of the motor (precentral) cortex . Meninges (three fibrous membranes that enclose the brain and spinal cord) * Same as those of the spinal cord * dura mater (pachymeninx) * composed of relatively avascular connective tissue. * there are two major dural folds in the cranium:
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Cerebral Cortex Histology - Brain & Cranial Nerves...

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