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Nervous System

Nervous System. Introduction. What is the function of the Nervous System. To receive information from a sensory neuron To process info. by the brain & spinal cord To respond by an effectors (muscle/gland). Basic Anatomy. Dendrites receive stimuli Nerve cell body

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Nervous System

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  1. Nervous System Introduction

  2. What is the function of the Nervous System • To receive information from a sensory neuron • To process info. by the brain & spinal cord • To respond by an effectors (muscle/gland)

  3. Basic Anatomy • Dendrites receive stimuli • Nerve cell body @ nucleus transmits the stimuli • Axon transmits the impulse to another dendrite • Neuron Anatomy

  4. Axon ending: terminal bud • Transfers the electrical nerve impulse • By chemical neuron-transmitters • From one neuron to the next • http://www.cartage.org.lb/en/kids/science/Biology Cells/Nervous System/Explore the Nervous System/Neuron/Gallery of Neurons/gall1.html

  5. Sensory neurons or“receptors” receive a stimulus from: • ears - hearing • nose - smell • skin - touch • mouth - taste • eyes - sight

  6. Review • What is the name of the nerve cell ? • Does the stimulus travel one- way or down the neuron in two directions? • Which part receives the stimuli? (The synapse, dendrites, cell body, or axon) • Which is covered by a myelin sheath ? • What is the purpose of the myelin sheath?

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