Nervous System and Neurons Overview
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Questions and Answers

What type of signals do neurons use to communicate?

  • Electrical signals only
  • Magnetic signals
  • Both electrical and chemical signals (correct)
  • Chemical signals only

    • Where does the processing of information take place in the nervous system?

  • Ganglia only
  • Brain only
  • Peripheral nervous system (PNS)
  • In simple clusters of neurons called ganglia or a more complex organization of neurons called a brain. (correct)

    • Which animal is mentioned as a good model for studying neuron function due to its extremely large nerve cells?

  • Mantle
  • Arm
  • Squid (correct)
  • Cone snail

    • What is the function of dendrites in a neuron?

    <p>Receive signals from other neurons</p> Signup and view all the answers

    What stage involves the detection of external stimuli and internal conditions in the nervous system?

    <p>Sensory input</p> Signup and view all the answers

    In the nervous system, where does integration take place?

    <p>In the central nervous system (CNS)</p> Signup and view all the answers

    Where does signal transmission occur in a neuron?

    <p>Synapse</p> Signup and view all the answers

    What is the function of ganglia in the nervous system?

    <p>To process information</p> Signup and view all the answers

    Where do nerves with giant axons, ganglia, and the brain belong within the nervous system?

    <p>Central nervous system (CNS)</p> Signup and view all the answers

    What is the function of neurotransmitters in signal transmission between neurons?

    <p>Passing information across the synapse</p> Signup and view all the answers

    Which part of a neuron has most of its organelles located in it?

    <p>Cell body</p> Signup and view all the answers

    What is the function of the axon in a neuron?

    <p>Transmit signals to other cells at synapses</p> Signup and view all the answers

    What is the main role of the peripheral nervous system (PNS)?

    <p>Bring information into and out of the CNS</p> Signup and view all the answers

    Which cells nourish or insulate most neurons in the nervous system?

    <p>Glia</p> Signup and view all the answers

    What is the main purpose of axons in a neuron?

    <p>Passing electrical signals away from the cell body</p> Signup and view all the answers

    In which part of a neuron does the transmission of information occur?

    <p>Axon</p> Signup and view all the answers

    Which of the following ions is important in the electrochemical signaling process of neurons?

    <p>Sodium and potassium</p> Signup and view all the answers

    How might increased branching of an axon help coordinate responses to signals communicated by the nervous system?

    <p>Enhance communication with other neurons</p> Signup and view all the answers

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