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The Central Nervous System

Explore the intricate workings of the central nervous system, comprising the brain and spinal cord, and learn how it processes information and triggers responses. Discover the key components like the cerebral lobes, cerebellum, brain stem, and more. Delve into the spinal cord's role as the pathway to the peripheral nervous system. Unravel the complexities of the autonomic and somatic divisions, including the sympathetic and parasympathetic systems. Equip yourself with knowledge about sensory and motor functions, pain perception, and muscle control. Take a journey through the nervous system with this comprehensive workbook.

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The Central Nervous System

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  1. The Central Nervous System

  2. Movie • Body Atlas

  3. The Nervous System • The nervous system gathers information about internal and external conditions, analyzes it and then initiates a response. There are two main parts of the nervous system: central nervous system (CNS) and the peripheral nervous system (PNS)

  4. Central Nervous System • Is made up of the brain and spinal cord

  5. The Brain

  6. The Brain • Is the main control center for all activity. • Made up of 6 parts

  7. 1) Cereburm • Largest section, contains sensory and motor activities and intelligence.

  8. 2) Cerebellum • 2nd largest section, co-ordinates muscle movement and controls balance.

  9. 3) Brain Stem • Links the cerebellum with the spinal cord, houses brain centers responsible for autonomic functions and muscle tone.

  10. 4) Diencephalon • Thalamus (pain awareness, attention) and hypothalamus (body temp, appetite)

  11. 5) Limbic System • Regulates drives (hunger, aggression etc.)

  12. 6) Reticular Activating System • Maintains consciousness (files through the millions of sensory stimuli and focuses on which one is important to you!)

  13. The Spinal Cord

  14. The Spinal Cord • The information pathway for connecting the brain to the PNS • Runs through the vertebrae

  15. Peripheral Nervous System • Located OUTSIDE the CNS • Network of information • 2 parts: autonomic and somatic

  16. 1) Autonomic • Involuntary • A) Sympathetic: prepares body for fright or flight, releases adrenaline, increases blood flow. • B) Parasympathetic: return body to normal, opposite effect.

  17. 2) SOMATIC • Afferent (sensory nerves) carry information from sensory receptors to the CNS • Efferent (motor nerves) carry infro from the CNS to organs • Receive and process info • Give sensation of pain/heat/cold etc. • Responsible for muscle movement

  18. Autonomic and Somatic Nervous Systems

  19. Workbook Label 87, 88, 89

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