Question 1

Neurons in the skin that are responsible for detecting pain are

Accepted Answer

A)   apolar.
B)   pseudo-unipolar.
C)   bipolar.
D)   multipolar.E) A) and B)
F) C) and D)

Question 2

Nissl bodies are

Accepted Answer

A)   part of a dendrite.
B)   also called gemmules.
C)   lipid droplets.
D)   areas of rough endoplasmic reticulum.
E)   part of the Golgi apparatus.F) All of the above
G) C) and D)

Question 3

Match the neuroglial cell with its function.
-astrocytes

Accepted Answer

A)  influence function of blood-brain barrier
B)  macrophages in CNS
C)  produce cerebrospinal fluid
D)  form myelin sheath around axons in CNS
E)  form myelin sheath around part of the axon in the PNSF) A) and B)
G) A) and E)

Question 4

Neurotransmitters

Accepted Answer

A)   stimulate presynaptic terminals.
B)   remain in the synaptic cleft for long periods of time.
C)   bind irreversibly to the receptor molecules of the postsynaptic membrane.
D)   cause the production of action potentials in the postsynaptic membrane.
E)   do not affect membrane channels in the postsynaptic membrane.F) B) and C)
G) D) and E)

Question 5

-Identify structure "C" on the neuron.

Accepted Answer

A)   Schwann cell
B)   Node of Ranvier
C)   neuron cell body (soma) 
D)   dendrites
E)   axonF) A) and E)
G) A) and B)

Question 6

Match the term with the correct definition.
-Resting Membrane Potential

Accepted Answer

A)  a small change in the resting membrane potential confined to a small area
B)  a charge difference across the plasma membrane when the cell is in an unstimulated state
C)  a larger change in resting membrane potential that spreads over entire surface of a cell
D)  membrane becomes more positive when sodium ions diffuse into cell
E)  return to the resting membrane potentialF) A) and B)
G) A) and C)

Question 7

Schwann cells differ from oligodendrocytes in which of the following ways?

Accepted Answer

A)   Schwann cells form myelin; oligodendrocytes do not.
B)   Oligodendrocytes are only found in the PNS; Schwann cells are only found in the CNS.
C)   Schwann cells form sheaths around several axons, while oligodendrocytes form sheaths around only one axon.
D)   Schwann cells form a myelin sheath around a portion of only one axon, while oligodendrocytes can surround portions of several axons.
E)   None of these choices are true differences.F) All of the above
G) A) and D)

Question 8

In some cells, an afterpotential occurs because

Accepted Answer

A)   the sodium ions continue to enter the cell after depolarization is finished.
B)   there is prolonged, elevated permeability to potassium during repolarization.
C)   the sodium-potassium pump is actively exchanging ions across the membrane.
D)   the extracellular Na+ ion concentration is reduced.
E)   the permeability to sodium continues longer than necessary.F) A) and B)
G) B) and E)

Question 9

Receptor molecules in synapses

Accepted Answer

A)   tend to concentrate on presynaptic terminals.
B)   bind irreversibly with neurotransmitter.
C)   have a high degree of specificity.
D)   serve as channel proteins.
E)   can bind to any molecule in the synapse.F) All of the above
G) B) and E)

Question 10

Action potentials are conducted rapidly from one node of Ranvier to the next in a process called ____________ conduction.

Accepted Answer

The answer of Action potentials are conducted rapidly from one...

Question 11

Overproduction of cerebrospinal fluid could be the result of overactivity of the

Accepted Answer

A)   astrocytes.
B)   microglial cells.
C)   oligodendrocytes.
D)   macrophages.
E)   ependymal cells.F) A) and D)
G) A) and B)

Question 12

Microglia

Accepted Answer

A)   are part of the blood-brain barrier.
B)   are phagocytic cells in the CNS.
C)   produce cerebrospinal fluid.
D)   form myelin sheaths.
E)   are part of the choroid plexus.F) A) and D)
G) A) and B)

Question 13

-Identify structure "D" on the neuron.

Accepted Answer

A)   Schwann cell
B)   Node of Ranvier
C)   neuron cell body (soma) 
D)   dendrites
E)   axonF) A) and B)
G) C) and E)

Question 14

Match the neuroglial cell with its function.
-Schwann cell

Accepted Answer

A)  influence function of blood-brain barrier
B)  macrophages in CNS
C)  produce cerebrospinal fluid
D)  form myelin sheath around axons in CNS
E)  form myelin sheath around part of the axon in the PNSF) C) and D)
G) All of the above

Question 15

What type of neuroglial cells provide support and nutrition to sensory ganglia in the PNS?

Accepted Answer

A)   Schwann cells
B)   microglia
C)   ependymal cells
D)   satellite cellsE) None of the above
F) A) and B)

Question 16

Which of the following is true?

Accepted Answer

A)   Unmyelinated axons rest in invaginations of Schwann cells or oligodendrocytes..
B)   Myelination will not influence the speed of conduction of action potentials.
C)   The myelin sheath inhibits the flow of electrical charges at nodes.
D)   The myelin sheath is a protein wrapping.
E)   The myelin sheath does not electrically insulate the axons from one another.F) None of the above
G) All of the above

Question 17

The sensory (afferent)  division of the peripheral nervous system

Accepted Answer

A)   transmits action potentials to sensory organs.
B)   conveys action potentials to the CNS.
C)   stimulates glands to release hormones.
D)   stimulates muscle contractions.
E)   does not involve sensory receptors.F) C) and D)
G) A) and B)

Question 18

Which of the following is NOT true about astrocytes?

Accepted Answer

A)   They can wall off an injury site to prevent spread of inflammation.
B)   They can prevent toxic substances from entering brain tissue.
C)   They can release chemicals that promote formation of synapses.
D)   They can aid in the regeneration of injured neurons.E) C) and D)
F) A) and B)

Question 19

A local anesthetic such as Novocaine decreases membrane permeability to Na+ ions. The use of this anesthetic will

Accepted Answer

A)   block sensory input into the CNS.
B)   enhance the development of EPSPs.
C)   cause RMP to move closer to threshold.
D)   cause Cl- ions to enter cells instead of Na+ ions.
E)   depolarize the cell.F) A) and B)
G) A) and C)

Question 20

Neurotransmitter is being released at a synapse. Which of the following occurs last?

Accepted Answer

A)   Calcium ions enter the presynaptic terminal.
B)   Synaptic vesicles release neurotransmitter by exocytosis.
C)   An action potential is produced in the postsynaptic membrane.
D)   Neurotransmitter flows rapidly across the synaptic cleft.
E)   Neurotransmitter binds with the receptor on the postsynaptic membrane.F) A) and B)
G) C) and E)

Exam 11: Functional Organization of Nervous Tissue

Schwann cells differ from oligodendrocytes in which of the following ways?

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Overproduction of cerebrospinal fluid could be the result of overactivity of the

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A local anesthetic such as Novocaine decreases membrane permeability to Na+ ions. The use of this anesthetic will

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-Identify structure "D" on the neuron.

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Neurons in the skin that are responsible for detecting pain are

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Neurotransmitters

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Neurotransmitter is being released at a synapse. Which of the following occurs last?

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Which of the following is true?

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Nissl bodies are

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In some cells, an afterpotential occurs because

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Action potentials are conducted rapidly from one node of Ranvier to the next in a process called ____________ conduction.

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Which of the following is NOT true about astrocytes?

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-Identify structure "C" on the neuron.

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What type of neuroglial cells provide support and nutrition to sensory ganglia in the PNS?

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Microglia

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Receptor molecules in synapses

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Match the neuroglial cell with its function. -astrocytes

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The sensory (afferent) division of the peripheral nervous system

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Match the neuroglial cell with its function. -Schwann cell

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Match the term with the correct definition. -Resting Membrane Potential

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