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The Nervous System

The Nervous System. Perry C. Hanavan, Au.D. Learning Outcomes. Outline the basic anatomy of the nervous system Understand anatomical divisions: Central nervous system Peripheral nervous system Understand functional divisions: Somatic nervous system Autonomic nervous system

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The Nervous System

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  1. The Nervous System Perry C. Hanavan, Au.D.

  2. Learning Outcomes • Outline the basic anatomy of the nervous system • Understand anatomical divisions: • Central nervous system • Peripheral nervous system • Understand functional divisions: • Somatic nervous system • Autonomic nervous system • Explain the functions of the major structures of the nervous system

  3. Question Which of the following is a part of the peripheral nervous system? • Brain • Spinal nerves • Spinal cord • Cranial nerves • B and D

  4. Anatomical divisions CENTRAL NERVOUS SYSTEM BRAIN SPINAL CORD PERIPHERAL NERVOUS SYSTEM CRANIAL NERVES To & from brain SPINAL NERVES To & from spinal cord

  5. brain spinal cord peripheral nerves The nervous system

  6. Role of the nervous system • To monitor the internal and external environment of the body • To process this information • To direct behaviour and body processes

  7. Question The skeletal muscles belong to the: • SNS • ANS • CNS • I have no idea

  8. Functional divisions Somatic nervous system: voluntary, controls skeletal muscle Autonomic nervous system: involuntary, controls smooth muscle

  9. Neurons

  10. Synaptic Junction

  11. Glial Cell: Astrocyte - Provides Transport of Nutrients to Neuron – Shields Toxins

  12. Excitatory/Inhibitory

  13. Types of Neurons

  14. Meningeal Linings of Brain

  15. peripheral nerve epineurium perineurium nerve fibre endoneurium myelin sheath axon Features of the PNS (1) • Structure of a peripheral nerve • Bundles of axons packaged together • Carry motor, sensory and autonomic info

  16. Features of the PNS (2) Nerve Afferent Efferent Ganglion

  17. Features of the PNS (3)

  18. grey matter white matter Matter

  19. cerebral hemisphere cerebellum brainstem Brain

  20. View from Below

  21. touch, pain, temperature sensation planning, emotion, mood, behaviour, motor function, smell vision hearing, language, memory balance, coordination basic body functions Lobes

  22. Brain

  23. Meninges

  24. Brain Ventricles Produce and contain CSF CSF circulates to subarachnoid space

  25. Spinal Cord

  26. a = ganglion vertebral body spinal cord nerve root a intervertebral foramen Spinal Cord

  27. Neurons

  28. Ventricles

  29. Cerebral Cortex

  30. Brodmann Map

  31. Motor Strip

  32. Limbic System

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