PSYA01H3 Chapter Notes - Chapter 3-4: Sensory Neuron, Axon Terminal, Sodium-Calcium Exchanger

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A neuron is made up of three parts: a cell body that houses the chromosomes with the organism"s. Dna and maintains the health of the cell; dendrites that receive information from other neurons; and an axon that transmits information to other neurons, muscles, and glands. Dendrites- receive info from other neuron and relay to cell body. Axon- transmits info from other neurons muscles or glands. Myelin sheath- insulating layer of fatty material (glial cells) around axon. The myelin helps the axon work more efficiently. in diseases like multiple sclerosis the sheath breaks down slowing the transfer of info. Cajal found that dendrites and axons do not touch each other. There is a small gap between called the synapse. The synapse is the junction between axon of one neuron the dendrite or cell body of another. (neurons don"t touch synaptic gap) between axon dendrite.

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