Human Biology: Ch:6

    Cards (13)

    • Which of the following cavities contains a component of the central nervous system?
      Cranial
    • Which structure predominates in the white matter of the brain?
      myelinated axons
    • Which part of the neuron transmits an electrical signal to a target cell?
      Axon
    • Which term describes a bundle of axons in the peripheral nervous system?
      nerve
    • Which functional division of the nervous system would be responsible for the psychological changes seen during exercise?
      autonomic
    • What type of glial cell provides myelin for the axons in a tract?
      oligodendorcyte
    • Which part of a neuron contains the nucleus?
      Soma
    • Which of the following substances is least able to cross the blood-brain barrier?
      White blood cells
    • If a thermoreceptor is sensitive to temperature sensations, what would a chemoreceptor be sensitive to?
      Molecules
    • Which of these locations is where the greatest level of integration is taking place in the example of testing the temperature of the shower?
      Cerebral cortex
    • How long does all the signaling through the sensory pathway, within the central nervous system, and through the motor command pathway take?

      Fraction of a second
    • What ion enters a neuron, causing depolarization of the cell membrane?
      Sodium
    • Which of the following is probably going to propagate an action potential fastest?
      A thick, myelinated axon