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Understanding the Nervous System: Functions and Organs

This informative guide explores the functions and components of the nervous system, including the Central Nervous System (CNS) and Peripheral Nervous System (PNS). Learn about the brain, spinal cord, nerves, and more. Discover how the CNS acts as the control center, while the PNS gathers and interprets information to help the body respond effectively. Dive into the intricate details of sensory detection, motor control, and fine motor coordination provided by different regions of the brain. Explore the significance of the spinal cord in connecting the brain to the rest of the body and facilitating reflex actions.

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Understanding the Nervous System: Functions and Organs

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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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