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Which cells provide the myelin sheath for neurons in the CNS?


A) Schwann cells
B) astrocytes
C) microglial cells
D) oligodendrocyctes

E) B) and C)
F) A) and C)

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White matter is white in color because of ________.

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An axosomatic synapse occurs between the axon terminals of one neuron and the ________ of a proximal neuron.


A) synapse
B) axon terminal
C) axon
D) cell body
E) dendrite

F) C) and D)
G) B) and C)

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White matter represents


A) aggregations of neuron cell bodies in the brain.
B) aggregations of neuron cell bodies in the spinal cord.
C) myelinated axons traveling together in the CNS.
D) dendrites traveling together in the ANS.

E) C) and D)
F) A) and C)

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Neurofibrils


A) form synapses with axons of postsynaptic neurons.
B) help circulate cerebrospinal fluid.
C) prevent the neuron from being pulled apart when subjected to tensile forces.
D) receive incoming stimuli and pass the signal toward the cell body.

E) C) and D)
F) A) and B)

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Ciliated neuroglial cells that form an epithelium and play an active role in forming and moving cerebrospinal fluid are


A) ependymal cells.
B) Schwann cells.
C) oligodendrocytes.
D) astrocytes.

E) All of the above
F) A) and B)

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Distinguish monosynaptic reflexes from polysynaptic reflexes.

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Monosynaptic reflexes involve a single s...

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This is the site of communication between neurons.


A) synapse
B) axon terminal
C) axon
D) cell body
E) dendrite

F) A) and D)
G) A) and B)

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Nearly all motor neurons are of this type, based on the classification of the type and number of processes.

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In this part of a neuron, neurofilaments, actin microfilaments, and microtubules are particularly abundant, providing structural support and a transport network.


A) synapse
B) axon terminal
C) axon
D) cell body
E) dendrite

F) C) and D)
G) A) and E)

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Most neurons in the body are multipolar neurons.

A) True
B) False

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Name four characteristics that distinguish neuroglial cells from neurons.

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Glial cells are smaller, they ...

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