Neurotransmission and Synaptic Transmission Quiz
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Questions and Answers

Which of the following cells are not electrically excitable?

  • Schwann cells
  • Microglia
  • Astrocytes (correct)
  • Oligodendrocytes
  • Which type of cells make up about half the volume of the nervous system?

  • Astrocytes (correct)
  • Oligodendrocytes
  • Microglia
  • Ependymal cells
  • Which type of cells can multiply and divide?

  • Oligodendrocytes
  • Microglia
  • Astrocytes (correct)
  • Ependymal cells
  • Which type of cells are responsible for nourishing neurons?

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

    Which type of cells are found in both the central and peripheral nervous systems?

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

    Which type of cells form myelin in the central nervous system?

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

    Which type of cells perform immune and scavenging functions in the nervous system?

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

    Which type of cells are involved in the formation of the blood-brain barrier?

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

    Which type of cells are responsible for supporting and nourishing neuron cell bodies in the peripheral nervous system?

    <p>Satellite cells</p> Signup and view all the answers

    Which type of cells line the ventricles of the brain and produce cerebrospinal fluid?

    <p>Ependymal cells</p> Signup and view all the answers

    What type of potentials occur in response to the opening of mechanically-gated or ligand-gated ion channels?

    <p>Graded potentials</p> Signup and view all the answers

    What factors affect the propagation speed of action potentials?

    <p>Axon diameter and amount of myelination</p> Signup and view all the answers

    What type of potential occurs when a sensory neuron receptor is excited by a form of energy like heat or light?

    <p>Receptor potential</p> Signup and view all the answers

    What is the main purpose of the myelin sheath?

    <p>Insulates and protects the axon</p> Signup and view all the answers

    Which type of neuron is most commonly found in the brain, spinal cord, and ganglia?

    <p>Multiple dendrites, single axon, and multiple branches at the end of the axon</p> Signup and view all the answers

    Which cells allow complex functions of the nervous system such as sensing, thinking, remembering, and controlling muscle activity?

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

    What effect does higher temperature have on the speed of action potential propagation?

    <p>It increases the speed of action potential propagation</p> Signup and view all the answers

    What are the two classes of neurotransmitters based on size?

    <p>Small-molecule neurotransmitters and neuropeptides</p> Signup and view all the answers

    What is the junction between neurons or between a neuron and an effector called?

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

    How do neurons communicate with chemical messengers?

    <p>Through neurotransmitters</p> Signup and view all the answers

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