Spinal cord & nerves

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  • Interaction Between Neurons
  • A Typical Motor Neuron
  • Spinal cord & nerves

    1. 1. Spinal Cord Ch 13 & Nerves
    2. 2. The Spinal Cord
    3. 3. Peripheral Nervous System cranial nerves- 12 pr spinal nerves- 31 pr
    4. 4. The Spinal Cord ventral root pia mater dura mater arachnoid grey matter dorsal root white matter spinal nerves
    5. 5. The Spinal Cord spinal cord spinal nerve vertebra
    6. 6. Nerve Pathways into the Spinal Cord sensory pathway motor pathway
    7. 7. Neuron-To-Neuron Transmission synapses
    8. 8. Spinal Nerves
    9. 9. Spinal Cord
    10. 10. Spinal Nerves
    11. 11. Spinal Nerves
    12. 12. Cervical Plexus
    13. 13. Brachial Plexus
    14. 14. Thoracic Nerves <ul><li>T3-T12 </li></ul><ul><li>11 intercostal nerve </li></ul><ul><li>1 subcostal nerve </li></ul>
    15. 15. Lumbar Plexus
    16. 16. Sacral Plexus
    17. 17. Functional Divisions of the Peripheral Nervous System <ul><li>Afferent Division </li></ul><ul><ul><li>Sensory (advances) neuron – goes toward CNS </li></ul></ul><ul><li>Efferent Division </li></ul><ul><ul><li>Motor (exits) neuron- leaves CNS </li></ul></ul><ul><ul><li>Somatic Nervous System </li></ul></ul><ul><ul><li>Autonomic Nervous System </li></ul></ul>
    18. 18. Spinal Reflex Arc patellar ligament stretch receptor motor neuron sensory neuron motor neuron interneuron

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