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Understanding the Nervous System: Functions and Anatomy

Learn the basic functions and anatomy of the nervous system. Explore how sensory neurons receive, process, and respond to stimuli through the brain and spinal cord. Discover the role of dendrites, axons, and neuron transmitters in transmitting nerve impulses. Review and test your knowledge with interactive questions.

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Understanding the Nervous System: Functions and Anatomy

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Presentation Transcript

  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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