editor
228
edits
Changes
→Slide 15: Choroid plexus (Masson)
*White matter.
**Note few cells per unit area. Cells in the white matter are microglia with few if any neuron bodies.
*Gray matter (cerebral cortex).
**The cerebral cortex is divided into six layers. Distinguishing the exact borders of these layers is difficult requiring special staining and is beyond the scope of this discussion. The six layers from outside to inside include: plexiform or molecular layer, small pyramidal cell layer, medium pyramidal cell layer, granular layer, large pyramidal cell layer, and the polymorphic cell layer.
*Meninges consisting of the pia mater.
=== Slide 15: Choroid plexus (Masson) ===
[[File:HistologicChapter6BrainSagittalSectionLabeledHistologicChapter6BrainSagittalSectionLabelled.jpg|thumb|200px|Brain Sagittal Section Labeled]]
On this trichrome stained section of choroid plexus note the multiple fronds of tissue. Each is covered with ependymal cells and has a connective tissue infrastructure.
<peir-vm>UAB-Histology-00015</peir-vm>
== Spinal Cord - : General Structure ==
[[File:HistologicChapter6SpinalCord.jpg|thumb|200px|Spinal Cord]]
The spinal cord is composed of two principal parts extending the length of the cord, the inner core of gray matter and an outer layer of white matter. The entire cord is supported in a framework of neuroglia. In the most peripheral part of the cord, processes of fibrous astrocytes condense to form the marginal glial membrane, in which nerve fibers are absent.