PSYCH 112 Chapter 3: Chapter 3 (Malley) Text Notes
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Nervous system consists of mostly glial cells and neurons. Cns glia (neuroglia) immune system of cns, help to clean dead cells. Insulate neurons, provide protection, structure, nutrition, and repair connections between neurons neurons creep along to reach their destination within the brain extrude myelin provide nutrients to neurons, dispose of neural waste, and maintain. Radial glia: important during brain development, for a radial network of fibers on which. : ae thought to play a role in digestive processing. Process information: sum inputs from excitatory and inhibitory sources, comparing that sum to a threshold. Communicate the result of that information, via: axonal communication. For every two potassium ions pumped in, three sodium ions are umped out: creates a voltage (resting potential is about. Cell reaches a charge of 20-30 mv: active conduction axon, because the neuron is not a good conductor, passive conduction. : facilitated by the myelin sheath if a neuron dispatches an action potential, it does so at full.
