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Nervous System and Vertebrates Biology
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Nervous System and Vertebrates Biology

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Questions and Answers

Which part of the nervous system first arose in wormlike organisms about 550 to 600 million years ago?

  • Peripheral nervous system (PNS) (correct)
  • Autonomic nervous system
  • Somatic nervous system
  • Central nervous system (CNS)

    • What are the nerves that transmit signals from the brain called?

  • Spinal nerves
  • Mixed nerves
  • Sensory nerves
  • Motor nerves (correct)

    • Which subsystem of the peripheral nervous system mediates voluntary movement?

  • Enteric nervous system
  • Autonomic nervous system
  • Somatic nervous system (correct)
  • Sympathetic nervous system

    • In vertebrates, what does the central nervous system (CNS) consist of?

    <p>Brain and spinal cord</p> Signup and view all the answers

    When is the sympathetic nervous system activated?

    <p>In cases of emergencies to mobilize energy</p> Signup and view all the answers

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