PSY100Y5 Chapter 3: Chapter 3 - COMPLETE Textbook Notes
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PSY100Y5 Full Course Notes
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Soma is greek for body: dendrites: part of the neuron that are specialized to receive information. Each branch is a dendrite. www. notesolution. com: axon: long, thin fibre that transmits signals away from the soma to the other neurons or to muscles or glands, myelin sheath: insulating material derived from glia cells. They encase some axons: terminal buttons: small knobs that secrete chemicals called neurotransmitters, synapse: junction where information is transmitted from one neuron to another. Greek for glue: smaller than the neurons, but outnumber them 10 to 1, supply nourishment to neurons, help remove thee neurons" waste products, provide insulation around many axons (myelin sheath). The synapse: where neurons: sending chemicals: chemicals as couriers, two neurons don"t actually touch. Inhibitory: an excitatory psp is a positive voltage shift that increases the likelihood that the postsynaptic neuron will fire an action potential.
