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Nervous System

Nervous System. Functions. gathers & interprets information responds to the information. Two Parts. Central Nervous System (CNS) Peripheral Nervous System (PNS). Organs of CNS. brain spinal cord. Organs of PNS. all other parts of nervous system nerves. The Peripheral Nervous System.

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Nervous System

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  1. Nervous System

  2. Functions • gathers & interprets information • responds to the information

  3. Two Parts • Central Nervous System (CNS) • Peripheral Nervous System (PNS)

  4. Organs of CNS • brain • spinal cord

  5. Organs of PNS • all other parts of nervous system • nerves

  6. The Peripheral Nervous System • What is a nerve? • collection of axons bundled together with blood vessels and connective tissue

  7. Parts of the PNS • Somatic Nervous System • Autonomic Nervous System Read page 229

  8. The Central Nervous System • BRAIN • control center for the body • each region associated w/ specific functions

  9. CEREBRUM • divided into right and left hemispheres • conscious functionings • interpreting stimuli from senses

  10. CEREBRUM • sensory detection • motor control of skeletal muscles

  11. CEREBELLUM • second largest portion • fine motor coordination • body movement • posture • balance

  12. BRAIN STEM • parts: • medulla oblongata • pons • midbrain

  13. BRAIN STEM • controls: • heart rate • constriction of blood vessels • digestion • respiration

  14. SPINAL CORD • bundle of interneurons • surrounded by the vertebral column • cranium to hip area

  15. SPINAL CORD • provides connection b/w the brain and the extremities & region of the body associated with reflex actions

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