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Nervous Tissue: The Neuron quiz #3

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  • What does the axoplasm of the axon contain?
    Cytosol
  • What is the smallest structural and functional unit of the nervous system?
    The neuron is the smallest structural and functional unit of the nervous system.
  • What is the function of the dendrite?
    The function of the dendrite is to receive incoming signals from other neurons.
  • What part of the neuron receives information from other neurons?
    Dendrites receive information from other neurons.
  • The myelin sheath along an axon is not continuous. What are the gaps between Schwann cells called?
    The gaps between Schwann cells are called nodes of Ranvier.
  • Which structure contains many cell bodies?
    Ganglia
  • What are the branched extensions of a neuron that receive signals called?
    The branched extensions of a neuron that receive signals are called dendrites.
  • What is the function of dendrites?
    The function of dendrites is to receive incoming signals from other neurons.
  • What is the function of dendrites in neurons?
    Dendrites receive signals
  • Which part of a neuron is not considered a structural component of the neuron itself?
    Synapse
  • In a myelinated axon, what is the role of the myelin sheath?
    In a myelinated axon, the myelin sheath increases the speed of nerve impulse transmission.
  • What are the three main structural parts of a neuron, and what is the primary function of each part?
    The three main structural parts of a neuron are dendrites (receive incoming electrical signals), the cell body or soma (contains the nucleus and most organelles), and the axon (conducts outgoing electrical signals).
  • What is the function of dendrites in a neuron?
    Dendrites are extensions of the neuron that receive incoming electrical signals and transmit them to the cell body.
  • What mnemonic can help you remember the direction of signal flow in a neuron?
    A mnemonic is that signals 'enter' via the 'dendrites' (both have 'en'), and the axon takes the signal 'away' (both have 'a').