Chapter 46
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Questions and Answers

Which of the following is the main body of a neuron?

  • Dendrite
  • Synaptic
  • Axon terminal
  • Soma (correct)
  • Which neurotransmitter is the chief excitatory transmitter in the CNS?

  • EK
  • GABA
  • ENa
  • Glutamate (correct)
  • What type of summation occurs when EPSPs created by distant synapses overlap?

  • Axon terminal summation
  • Spatial summation (correct)
  • Temporal summation
  • Dendrite summation
  • Which of the following is true about dendrites?

    <p>They allow signal reception from a large spatial area</p> Signup and view all the answers

    Which ions are involved in creating an inhibitory post synaptic potential (IPSP)?

    <p>Cl-</p> Signup and view all the answers

    Which ions are involved in creating an excitatory post synaptic potential (EPSP)?

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

    What is the chief inhibitory transmitter in the adult CNS?

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

    What is the effector part of a neuron?

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

    Which of the following is an electrotonic response that decays with an exponential time course?

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

    What is the sensory portion of a neuron?

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

    Which lobe of the cerebral cortex is responsible for auditory perception, semantics, and memory?

    <p>Temporal lobe</p> Signup and view all the answers

    Which lobe of the cerebral cortex is the visual processing center?

    <p>Occipital lobe</p> Signup and view all the answers

    Which division of the nervous system is responsible for responding to and moving about in our environment?

    <p>Motor Division</p> Signup and view all the answers

    Which level of CNS function controls subconscious body activities such as arterial pressure and respiration?

    <p>Lower brain level</p> Signup and view all the answers

    Which portion of the nervous system performs specific functions but always functions in association with lower centers?

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

    What is the function of the primary motor cortex?

    <p>Controlling voluntary movements</p> Signup and view all the answers

    Which level of CNS function contains the medulla, pons, mesencephalon, hypothalamus, thalamus, cerebellum, and basal ganglia?

    <p>Lower brain level</p> Signup and view all the answers

    What is the role of the somatosensory cortex?

    <p>Processing tactile information</p> Signup and view all the answers

    Which division of the nervous system processes information and creates memory?

    <p>Integrative Division</p> Signup and view all the answers

    What is the function of the cranial nerves?

    <p>Conveying information between the brain and parts of the body</p> Signup and view all the answers

    Which type of transmitter is usually excitatory in the CNS?

    <p>Small molecule, rapidly acting transmitters</p> Signup and view all the answers

    What is the chief inhibitory transmitter in the CNS?

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

    What is the possible mechanism for causing an epileptic seizure to end?

    <p>Synaptic fatigue</p> Signup and view all the answers

    Which type of transmitter causes long-term changes and acts on metabotropic receptors?

    <p>Neuropeptides, slowing acting transmitters</p> Signup and view all the answers

    What is the main function of small molecule, rapidly acting transmitters in the CNS?

    <p>Mediate most acute responses of the nervous system</p> Signup and view all the answers

    What is the mechanism behind synaptic facilitation?

    <p>Build-up of calcium ions in presynaptic terminals</p> Signup and view all the answers

    What is the mechanism behind synaptic fatigue?

    <p>Build-up of sodium ions in presynaptic terminals</p> Signup and view all the answers

    What is the chief excitatory transmitter in the CNS?

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

    What is the protective mechanism for excessive neuronal activity?

    <p>Synaptic fatigue</p> Signup and view all the answers

    What is the process that takes time in neurotransmission and can be used to calculate the number of chemically connected series neurons in a circuit?

    <p>Synaptic delay</p> Signup and view all the answers

    Which division of the nervous system is responsible for processing information and creating memory?

    <p>Integrative Division</p> Signup and view all the answers

    Which lobe of the cerebral cortex is responsible for auditory perception, semantics, and memory?

    <p>Temporal lobe</p> Signup and view all the answers

    Which type of transmitter is usually excitatory in the CNS?

    <p>Small molecule, rapidly acting transmitter</p> Signup and view all the answers

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