A&P 1 - Nervous System I & II

Question 1 of 18

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The meninges consist of

Select one of the following:

  • the brain and spinal cord.

  • the membranes that delineate all of the major brain parts.

  • the pia mater, arachnoid mater, and dura mater.

  • nerve tracts that run up and down the spinal cord.

Question 2 of 18

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The ____________ is the thin meninx attached to the surface of the brain, containing many nerves and blood vessels.

Select one of the following:

  • dura mater

  • arachnoid mater

  • pia mater

Question 3 of 18

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The fourth ventricle is in the

Select one of the following:

  • midline of the brain, beneath the corpus callosum.

  • right cerebral hemisphere.

  • brainstem.

  • left cerebral hemisphere.

Question 4 of 18

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When the flexor muscles of one arm contract in a withdrawal reflex, the extensor muscles of the other arm contract. This phenomenon is called

Select one of the following:

  • crossed extensor reflex.

  • flexor extensor reflex.

  • crossed flexor reflex.

Question 5 of 18

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The spinothalamic tract conducts impulses

Select one of the following:

  • up the spinal cord to the thalamus.

  • down the spinal cord from the thalamus.

  • that stimulate skeletal muscles.

Question 6 of 18

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The spinal cord has

Select one of the following:

  • 31 segments.

  • a cervical and lumbar enlargement.

  • a core of gray matter surrounded by white matter.

  • all of the above.

Question 7 of 18

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The spinal cord has

Select one of the following:

  • 31 segments.

  • a cervical and lumbar enlargement.

  • a core of gray matter surrounded by white matter.

  • all of the above.

Question 8 of 18

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The part of the brain that coordinates voluntary muscular movements is the

Select one of the following:

  • corpus callosum.

  • brainstem.

  • cerebellum.

  • cerebrum.

Question 9 of 18

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The cytoplasmic extensions that, together with the cell body, provide the main receptive surfaces for neurons are

Select one of the following:

  • chromatophilic substance (Nissl bodies).

  • dendrites.

  • neurofibrils.

  • axons.

Question 10 of 18

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Masses of myelinated nerve fibers appear

Select one of the following:

  • brown

  • gray

  • white

  • transparent

Question 11 of 18

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Most of the neurons in the brain and spinal cord are

Select one of the following:

  • bipolar.

  • nonpolar.

  • multipolar.

  • unipolar

Question 12 of 18

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Which of the following cells is only found in the PNS?

Select one of the following:

  • Astrocyte

  • Microglial cell

  • Oligodendrocyte

  • Schwann cell

Question 13 of 18

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Dendrites on unipolar neurons are parts of

Select one of the following:

  • sensory neurons.

  • efferent neurons.

  • interneurons.

  • motor neurons.

Question 14 of 18

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An action potential is triggered if

Select one of the following:

  • EPSPs overpower IPSPs.

  • IPSPs overpower EPSPs.

  • chloride channels open.

  • the membrane hyperpolarizes.

Question 15 of 18

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The types of neurons that are organized into neuronal pools are

Select one of the following:

  • interneurons.

  • intraneurons.

  • Schwann cells.

Question 16 of 18

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Diverging axons amplify an impulse by

Select one of the following:

  • contacting many neurons.

  • returning the impulse to the neuron of origin.

  • splitting into multiple axons.

  • stimulating themselves.

Question 17 of 18

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The brain and spinal cord comprise the central nervous system.

Select one of the following:

  • True
  • False

Question 18 of 18

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What is the correct sequence of events along an axon that follows a membrane reaching threshold potential?
1. The membrane depolarizes.
2. Sodium channels open and sodium ions diffuse inward.
3. The membrane repolarizes.
4. Potassium channels open and potassium ions diffuse outward.

Select one of the following:

  • 4, 1, 3, 2

  • 3, 2, 4, 1

  • 2, 1, 4, 3

  • 1, 2, 4, 3

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A&P 1 - Nervous System I & II

Veronica Cannon
Quiz by , created over 2 years ago

Quiz on A&P 1 - Nervous System I & II, created by Veronica Cannon on 19/04/2014.

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Veronica Cannon
Created by Veronica Cannon over 2 years ago
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