Changes

==Ependymal Cells==

==Ependymal Cells==

[[Image:Forkingaqueduct.jpg|thumb|right|150px|Forking aqueduct, showing ependymal cells. Image courtesy of BioMed Archive]]

[[Image:Forkingaqueduct.jpg|thumb|right|150px|Forking aqueduct, showing ependymal cells. Image courtesy of BioMed Archive]]

* Ependymal cells line the CSF-filled ventricles in the brain and the central canal of the spinal cord, and form part of the choroid plexus.  

Ependymal cells make up the epithelial membrane which is the lining of the ventricular system within the brain and spinal cord. Ependymal cells are are involved in the production of [[Cerebral_Spinal_Fluid_-_Anatomy_%26_Physiology|cerebrospinal fluid]]. The cells line the CSF-filled ventricles in the brain and the central canal of the spinal cord, and form part of the [[Cerebral_Spinal_Fluid_-_Anatomy_%26_Physiology|choroid plexus]]. The apical surfaces of ependymal cells are covered with

a layer of cilia and microvilli.

* The apical surfaces of ependymal cells are covered with:

** A layer of cilia.  

Within the ventricles, modified ependymal cells and capillaries form a system called the choroid plexus which produces CSF. The ependymal cells beat thier cilia to circulate CSF around the central nervous system and the microvilli absorb CSF.

 

 

* Within the ventricles, modified ependymal cells and capillaries form a system called the choroid plexus.

** The choroid plexus which produces the CSF.

* Ependymal cells beat thier cilia to circulate CSF around the central nervous system.

* The microvilli absorb CSF.

==Endothelial Cells and the [[Blood Brain Barrier - Anatomy & Physiology|Blood Brain Barrier]]==

==Endothelial Cells and the [[Blood Brain Barrier - Anatomy & Physiology|Blood Brain Barrier]]==