Membrane Potential Grade 7 Trivia Quiz

36 Questions | Total Attempts: 62

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7th Grade Quizzes & Trivia

Membrane potential is the difference in electric potential between the interior and the exterior of a biological cell. The membrane allows entry and exit of substances in a cell. The test below is designed to test your understanding on membrane potential, give it a try and see what score you get.


Questions and Answers
  • 1. 
    Membrane potential exist when the membrane is depolarized.
    • A. 

      True

    • B. 

      False

  • 2. 
    Anything that inflames the CNS wil cause
    • A. 

      Pain.

    • B. 

      The blood-brain to become more permeable.

    • C. 

      Motor trmors.

    • D. 

      Abnormal respirations.

  • 3. 
    At which vertebral level does the spinal cord end?
    • A. 

      First lumbar

    • B. 

      First sacral

    • C. 

      Twelfth thoracic

    • D. 

      Coccyx

  • 4. 
    The cervical enlargement of the spinal cord contains
    • A. 

      A viscous liquid.

    • B. 

      Sensory neurons.

    • C. 

      Motor neurons.

    • D. 

      Muscle fibers.

  • 5. 
    A person can consciously inhibit a reflex because
    • A. 

      The reflex occurs exclusively in the spinal cord.

    • B. 

      All body responses are under voluntary control.

    • C. 

      The impulse goes to the cerebral cortex.

    • D. 

      Repolarization occurs in an upward direction.

  • 6. 
    Which component of a neuron contains organelles and produces the protein and energy needed to carry out its functions?
    • A. 

      Cell body.

    • B. 

      Axon.

    • C. 

      Dendrites.

    • D. 

      Schwann cells.

  • 7. 
    The components of a neuron that are short and branch profusely near the cell body are the
    • A. 

      Cell bodies.

    • B. 

      Axons.

    • C. 

      Dendrites.

    • D. 

      Schwann cells.

  • 8. 
    The _________ send information away from the cell body.
    • A. 

      Cells

    • B. 

      Axons

    • C. 

      Dendrites

    • D. 

      Schwann cells

  • 9. 
    The membranes of the ____ contain large amounts of myelin that insulates the axons and allows them to send nerve impulses quickly.
    • A. 

      Cell body

    • B. 

      Axon

    • C. 

      Dentrites

    • D. 

      Schwann cells

  • 10. 
    Which of the following are only found in the central nervous system and act as interpreters between the afferent and efferent nerves?
    • A. 

      Sensory neurons

    • B. 

      Microglia

    • C. 

      Interneurons

    • D. 

      Motor neurons

  • 11. 
    Also called afferent neurons, the ____ pick up information from receptors at the tip of their dendrites.
    • A. 

      Sensory neurons

    • B. 

      Microglia

    • C. 

      Interneurons

    • D. 

      Motor neurons

  • 12. 
    Which of the following, also called efferent neurons, carry impulses to the peripheral nervous system and stimulate glands to secrete?
    • A. 

      Sensory neurons

    • B. 

      Microglia

    • C. 

      Interneurons

    • D. 

      Motor neurons

  • 13. 
    Which of the following has an effect on the speed of impulse conduction? 
    • A. 

      Synapitic knob

    • B. 

      Neurotransmitter

    • C. 

      Axon diameter

    • D. 

      Interneuron

  • 14. 
    Located at the end of the axon branches, the ____ allows impulse transmission to continue to the dendrites, cell bodies, and axons of other neurons.
    • A. 

      Synapitic knob

    • B. 

      Neurotransmitter

    • C. 

      Axon diameter

    • D. 

      Interneuron

  • 15. 
    Which of the following can either stimulate neurons to send a nerve impulse or inhibit them from ending an impulse?
    • A. 

      Synapitic knob

    • B. 

      Neurotransmitter

    • C. 

      Axon diameter

    • D. 

      Interneuron

  • 16. 
    The ____ causes muscles to contract or relax and glands to secrete products.
    • A. 

      Synapitic knob

    • B. 

      Neurotransmitter

    • C. 

      Axon diameter

    • D. 

      Interneuron

  • 17. 
    The toughhest and outermost layer of the meninges is the
    • A. 

      Meninges.

    • B. 

      Dura mater.

    • C. 

      Pia mater.

    • D. 

      Arachnoid mater.

  • 18. 
    Which of the following is the membrane that protects the brain and spinal cord?
    • A. 

      Meninges

    • B. 

      Dura mater

    • C. 

      Pia mater

    • D. 

      Arachnoid mater

  • 19. 
    The middle layer of the meninges, named for its spider web-like appearance, is the
    • A. 

      Meninges

    • B. 

      Dura mater

    • C. 

      Pia mater

    • D. 

      Arachnoid mater

  • 20. 
    The ____ is between the arachnoid mater and pia mater and contains cerebrospinal fluid.
    • A. 

      Dura mater

    • B. 

      Pia mater

    • C. 

      Arachnoid mater

    • D. 

      Subarachnoid space

  • 21. 
    Which of these is the most delicate layer of the meninges, which sits directly on top of the brain and spinal cord and holds blood vessels onto the surface of these structures?
    • A. 

      Meninges

    • B. 

      Dura mater

    • C. 

      Pia mater

    • D. 

      Arachnoid mater

  • 22. 
    Which of the following does not describe the white matter of the spinal cord?
    • A. 

      It is the outer part of the spinal cord.

    • B. 

      It contains neuron cell bodies.

    • C. 

      It contains myelinated axons.

    • D. 

      Its divisions are called columns.

  • 23. 
    Which of the following describes the grey matter of the spinal cord?
    • A. 

      It is the outer part of the spinal cord.

    • B. 

      It contains neuron cell bodies.

    • C. 

      It contains myelinated axons.

    • D. 

      Its divisions are called columns.

  • 24. 
    Which of the following describes the white matter of the spinal cord?
    • A. 

      It is the inner part of the spinal cord.

    • B. 

      It contains neuron cell bodies.

    • C. 

      It contains myelinated axons.

    • D. 

      Its divisions are called columns.

  • 25. 
    The ____ of the spinal cord carries motor information from the brain to the muscles and glands.
    • A. 

      Ascending track

    • B. 

      Descending track

    • C. 

      Reflex arc

    • D. 

      Reflex

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