Anatomy and Cell Biology 3309 Study Guide - Final Guide: Purkinje Cell, Conus Medullaris, Dura Mater
8 Dec 2011
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Usually, nt is reuptaken by neurons or glia, or degraded by enzymes: many drugs affect nt uptake or effects. Ssris are antidepressants that prevent the reuptake of serotonin. Maos prolong dopamine signalling and are therefore useful in parkinson"s. Recall that there are 10x more glial cells than neurons: astrocytes. They support the bbb, but do not form it. They are partly responsible for non-regeneration in the cns: oligodendrocytes. They phagocytose injured cells and remove debris: ependymal cells. These line fluid cavities such as the central canals and ventricles in the brain. They have cilia that help circulate the csf. The cerebrum (cortex) is the largest part of the brain. The meninges are 3 ct layers that wrap around the brain: dura mater. It is a hard, tough structure: arachnoid. It forms trabeculars, which are column-like structures that form the subarachnoid space, which contains csf and blood vessels. It also sheaths blood vessels entering the cortex.
