Peripheral process and central process peripheral

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peripheral process and central process Peripheral process axon branch that extends into the periphery and has dendritic branches at its tip Central process axon branch that extends into the CNS and ends in synaptic end bulbs Trigger zone is at junction of the dendrites and axon Structural Classification of Neurons - picture of the different types, look at the differences from the cell body, most common is multipolar   Neuroglia Neuroglia or glia constitute about half the volume of the CNS Neuroglia is smaller than neurons Glia does not generate or propagate nerve impulses , they only support or collect the nerve impulse. They have the ability to multiply and divide in the mature nervous system Six types of neuroglia know all 6 and which are what category and there functions Astrocytes, oligodendrocytes, microglia, and ependymal cells are found only in the CNS Schwann cells (neurolemmocytes) and satellite cells are present in the PNS these two start with an S, only ones that do this
Neuroglia of the Central Nervous System Astrocytes - based on where it is located  There are two types of astrocytes Protoplasmic astrocytes found in gray matter no myelin sheaths, not much fat in this area Fibrous astrocytes are located mainly in white matter myelin sheaths, a lot of fat around this area The processes of astrocytes make contact with blood capillaries, neurons, and the pia mater Functions of Astrocytes Provide strength to support neurons Maintain the unique selective permeability characteristics of the endothelial cells In the embryo, astrocytes secrete chemicals that appear to regulate the growth, migration, and interconnections among neurons in the brain Maintain the appropriate chemical environment for the generation of nerve impulses Play a role in learning and memory by influencing the formation of neural synapses Oligodendrocytes Oligodendrocyte have processes that are responsible for forming the myelin sheath , a lipid and protein covering around some axons that insulates the axon and increases the speed of nerve impulse conduction Microglia Microglia function as phagocytes and they remove cellular debris, microbes and damaged nervous tissue, immune cells for the nervous system, gets rid of dead cells Ependymal Cells Ependymal cells line the ventricles of the brain and central canal of the spinal cord helps with cerebrospinal fluid support and produce this fluid Functionally, ependymal cells produce, possibly monitor, and assist in the circulation of cerebrospinal fluid They also form the blood cerebrospinal fluid barrier Neuroglia of the central nervous cells-  Picture of everything in the past few slides   Neuroglia of the PNS

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