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