11-04-11 Neuronal Cell Organization

11-04-11 Neuronal Cell Organization - ZOL 320 Developmental...

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ZOL 320 Developmental Bio November 4, 2011 Neuronal Cell Organization (Essentially, continuation of CNS lecture) II. Cell organization in the neural tube A. Types of cells in neural tube – Three main types of cell types from one stem cell type found in the germinal neuroepithelium (where there are dividing cells; closest to lumen): a. Glial cells b. Neuronal cells c. Ependymal cells d. Note: Cells away from lumen and on the outside won’t be dividing B. Cell origins in the nervous system: a. Neuroepithelium : Germinal epithelium where there are dividing stem cells b. Cells near the lumen form the ependyma b.i. Ependymal cells are ciliated cells (waft around cerebral spinal fluid) b.ii. Closest to neurocoel c. Neurons and glial cells will arise from a common stem cell at the lumen c.i. Glial cells : Non-neuronal cells (oligodendrite glial cells and astrocyte glial cells) c.i.1. Supporting cells, nourishing cells - They’re like the stroma of the brain (like the follicles embedded in stroma of the ovary
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This note was uploaded on 12/21/2011 for the course BIO 202 taught by Professor Brooks during the Fall '11 term at UCSB.

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11-04-11 Neuronal Cell Organization - ZOL 320 Developmental...

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