Neuron Classification and Synapse Types
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Questions and Answers

What is the percentage of neurons in the human CNS that interneurons are estimated to include?

  • 99% (correct)
  • 75%
  • 50%
  • 90%
  • What type of neurons have long axons that transmit nerve impulses from the CNS to a muscle or gland?

  • Sensory neurons
  • Anaxonic neurons
  • Interneurons
  • Motor neurons (correct)
  • What is the characteristic of the axon in sensory neurons?

  • Short and unipolar
  • Long and multipolar
  • Anaxonic in structure
  • Unipolar in structure (correct)
  • Which type of neurons are generally multipolar or anaxonic in structure?

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

    What is the characteristic of mature neurons in terms of cell division?

    <p>They have a low capacity for cell division</p> Signup and view all the answers

    What type of neurons are responsible for establishing relationships among other neurons and forming complex functional networks?

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

    What is the characteristic feature of Multipolar neurons?

    <p>Three or more processes coming off the soma</p> Signup and view all the answers

    What type of neuron has a single process that splits into two branches?

    <p>Pseudounipolar neuron</p> Signup and view all the answers

    What type of synapse occurs between axons and dendrites?

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

    What is the characteristic feature of Anaxonic neurons?

    <p>They have many dendrites but no true axon</p> Signup and view all the answers

    What type of neuron has a single short dendrite terminating in a brush-like tuft?

    <p>Unipolar brush cell</p> Signup and view all the answers

    What type of synapse occurs between dendrites?

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

    What is the function of Schwann cells in the peripheral nervous system?

    <p>To increase the speed of impulse propagation</p> Signup and view all the answers

    What is unique about the axon hillock?

    <p>It is the site of action potential generation</p> Signup and view all the answers

    What is the function of dendrites?

    <p>To propagate electrochemical stimulation to the cell body</p> Signup and view all the answers

    What is the initial segment of the axon?

    <p>The unmyelinated part of the axon</p> Signup and view all the answers

    What organelle is lacking in axons?

    <p>Golgi complex</p> Signup and view all the answers

    What is outside the myelin sheath?

    <p>The neurilemma</p> Signup and view all the answers

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