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Chapter 3

Chapter 3. Organization of Nervous System. Central Nervous System (CNS) Peripheral Nervous System (PNS). Central Nervous System. Brain Spinal Cord. Division of Peripheral Nervous System. Somatic Nervous System Autonomic Nervous System. Somatic Nervous System.

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Chapter 3

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  1. Chapter 3

  2. Organization of Nervous System • Central Nervous System (CNS) • Peripheral Nervous System (PNS)

  3. Central Nervous System • Brain • Spinal Cord

  4. Division of Peripheral Nervous System • Somatic Nervous System • Autonomic Nervous System

  5. Somatic Nervous System Nerves that connect to voluntary skeletal muscles and to sensory receptors.

  6. Autonomic Nervous System Nerves that connect to the heart, blood vessels, smooth muscles, and glands.

  7. Division of Autonomic Nervous System • Sympathetic Nervous System • Parasympathetic Nervous System

  8. Sympathetic Nervous System • Prepares the body to fight.

  9. Parasympathetic Nervous System • Allows the body to rest.

  10. Central Nervous System (CNS)

  11. Forebrain • Cerebrum • Thalamus • Hypothalamus • Lobes • Hemispheres • Limbic System

  12. Hindbrain • Cerebellum • Medulla • Pons

  13. Midbrain • Reticular Formation

  14. How Info Travels in Nervous System? • Dendrites • Soma/Cell Body • Axon

  15. Dendrites Neurons that receive information.

  16. Soma/Cell Body • Cell nucleus

  17. Axon • Transmits signals away from the cell body and dendrites.

  18. Brain Imaging Tools • Computerized Tomography (CT) Scan • Positron Emission Tomography (PET) Scan • Magnetic Resonance Imaging (MRI) Scan

  19. CT Scan Abnormalities in brain structure.

  20. PET Scan Looks at brain functioning.

  21. MRI Scan Looks at brain structure and brain activity.

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