Anatomy and Cell Biology 4451F/G Lecture Notes - Lecture 4: Myosatellite Cell, Chemical Synapse, Tight Junction
12 Sep 2018
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Glial cells: rudolph virchow (1821-1902: microglia (macrophages, macroglia cns, astrocytes, oligodendrocytes, ependymal cells, radial glia (bergman and mueller cells, macroglia pns, satellite cells, schwann cells. Nerves cannot regenerate in cns, but can in pns. The same neuron can be a part of cns or pns. Neurons cannot define difference between cns or pns what does is the environment that the neurons are embedded in. Environment is defined by the various different glial cells. Macroglia cells are actually derived from common precursor cell that gives rise to neurons and macroglia cells. They are part of cns that arises form neural tube. Microglia are cells that have origin in yolk cell, they migrate to fetal brain during first trimester of pregnancy. They are the immune cells of the brain. The brain is separated from the blood by blood brain barrier. That barrier is impermeable for a lot of things.
