Neurons: Nerve cells. Unique structure - cell body with many extensions or processes (nerve "fibers") which conduct impulses. There are two types of processes:
1. Dendrites - shorter, more numerous. These, along with the cell body, form the receptive surfaces of neurons. 2. Axons - single, long "fiber" which conducts impulse away from the cell body. Sometimes it is "branched" (collaterals). End has many fine branches. |
Neuroglial Cells (neuroglia)- supportive tissue of the nervous system (more numerous than neurons). Five types
1. Microglial Cells 2. Oligodendrocytes 3. Astrocytes 4. Ependymal Cells 5. Schwann cells *Myelin Sheaths |