PSYCH 2004 Lecture 4

PSYCH 2004 Lecture 4 - I. The Nervous System-Neural...

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I. The Nervous System---Neural Communication A. Parts of a Neuron B. One Neuron to Another: Synaptic Transmission C. Some Key Neurotransmitters II. Organization of the Nervous System A. Peripheral 1. Somatic 2. Autonomic a. Sympathetic b. Parasympathetic B. Central 1. Spinal Cord 2. Brain a. Hindbrain & Midbrain b. Forebrain subcortical cortex
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The sensory, motor, and interneurons number in the billions, and make up the nervous system.
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A neuron…
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Functions… cell body : carries out basic processes of the cell dendrites : receive message from nearby neurons axon : transmits electrical impulse (action potential) from cell body down length of neuron myelin sheath : made up of fats, insulates axon, making transmission faster & more efficient axon terminals : store neurotransmitters, then release them to activate (or inhibit) other neurons
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electrical current that travels from the start of the axon and travels to the terminals. The electrical current is caused by movement of charged
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This note was uploaded on 03/30/2008 for the course PSYC 2004 taught by Professor Dmharris during the Spring '06 term at Virginia Tech.

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PSYCH 2004 Lecture 4 - I. The Nervous System-Neural...

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