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The cell body of a neuron is supported by a complex meshwork of structural proteins called neurofilaments, which are assembled into larger neurofibrils. Some neurons also contain pigment granules, such as neuromelanin (a brownish-black pigment, byproduct of synthesis of catecholamines) and lipofuscin (yellowish-brown pigment that accumulates with age).
1 Astrocyte (Astroglia): Star-shaped cells that provide physical and nutritional support for neurons: 1) clean up brain debris; 2) transport nutrients to neurons; 3) hold neurons in place; 4) digest parts of dead neurons; 5) regulate content of extracellular space.here are a few ways in which glia cells are different from neurons: 1  Neurons have TWO processes called axons and dendrites....glial cells have only ONE. 2  Neurons CAN generate action potentials...glial cells CANNOT. 3  However, glial cells do have a resting potential.