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NERVOUS SYSTEM

NERVOUS SYSTEM. Coordinates all activities in the body by transmitting messages back and forth to every cell of the body through _________________. Central Nervous System. _______________ and ______________

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NERVOUS SYSTEM

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  1. NERVOUS SYSTEM Coordinates all activities in the body by transmitting messages back and forth to every cell of the body through _________________.

  2. Central Nervous System • _______________ and ______________ • Receives messages from the PNS (__________________________________________________________________) and sends a response or reaction. • Tells the body how to ______________________________________

  3. _________________ • About 18 +/- inches • Sends messages from __________________________ to ________________________ and visa versa.

  4. Brain • _______________________________________________________________________________________________________________ • Allows you to think, reason, coordinate, learn, remember, perform all bodily functions whether voluntary or involuntary

  5. Brain Parts • ______________ • _______________ • _______________

  6. Cerebrum • LARGEST, most complex part of brain • Controls __________________________________________________________________________ • ______________side controls the left side of the body • ______________ side controls the right side of the body

  7. Cerebrum Lobes • ________________ Lobe • _____________ Lobe • _____________ Lobe • ____________________ Lobe

  8. Frontal Lobe • Voluntary ______________ • Use of _________________ • _____________ • _____________

  9. Parietal Lobe • Sensory Information • _____________ • _____________ • _____________ • _____________ • _____________—where your body is and what it is doing

  10. Occipital Lobe • __________________

  11. Temporal Lobe • _________________ • _________________ • _________________ • _________________ • _________________

  12. ___________________________ • Coordinates movement of the skeletal muscles • Posture • Balance

  13. Brain Stem • 3-inch stalk of nerve cells and fibers that connect the __________________________________________________________________________ • The “Gateway” from the brain to the body and the body to the brain

  14. Brain Stem Parts • _______________________ • ____________________ • ____________________ • Thalamus • Hypothalamus

  15. Medulla Oblongata • The lowest portion of the brain stem • Regulates _____________________ rate • Regulates _____________________ rate • Regulates hearing, talking, and swallowing • Regulates reflexes such as: • ______________________ • ______________________ • ______________________

  16. Pons • Sits just above the M.O. • Connects nerve impulses to other parts of the ______________________ • Helps breathing • Controls muscles of the ________________________________

  17. Midbrain • Highest portion of the brain stem • Involved in controlling ________________ movement and _______________ size

  18. _______________________ • Relay center for incoming messages Kind of like the Pony Express, :~)

  19. Hypothalamus • Controls various body processes • _________________ • __________________ • __________________ • Through the __________________gland it controls metabolism, sexual development, and emotion

  20. Peripheral Nervous System (PNS) • Nerves outside of the ______________________________________ • Sends info from inside and outside of your body to the CNS for the brain to respond to

  21. PNS Parts • A__________________ Nervous System • ____________________ Nervous System

  22. Autonomic Nervous System • Controls Involuntary functions • _______________________—Reflex—”Fight or Flight” • _______________________—opposes actions of the sympathetic nervous system by slowing bodily functions during rest

  23. Somatic Nervous System • Relays messages from the eyes, ears, nose, tongue, and skin to the CNS which sends a response to the _______________________ muscles to move or react to a situation

  24. Neurons • Nerve cells • Cell body -__________________________________________________________________________________—nucleus • _______________—branched structures that extend from the cell body. They receive info from other neurons or sensory receptors and transmit impulses toward the cell body • _______________—transmit messages away from the cell body and toward other neurons, cells, or glands

  25. THE BRAIN

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