Question 1

-The figure is a process figure of the chemical synapse. What does "A" represent?

Accepted Answer

A)   postsynaptic membrane
B)   synaptic cleft
C)   synaptic vesicle
D)   voltage-gated calcium channel
E)   presynaptic terminalF) A) and B)
G) D) and E)

Question 2

-The figure illustrates the Action Potential. What does "B" represent?

Accepted Answer

A)   repolarization
B)   depolarization
C)   local potential
D)   threshold
E)   afterpotentialF) B) and D)
G) B) and E)

Question 3

A neuroglial cell that is a major component of the blood-brain barrier is the

Accepted Answer

A)   astrocyte.
B)   microglial cell.
C)   oligodendrocyte.
D)   ependymal cell.
E)   macrophage.F) C) and E)
G) A) and D)

Question 4

If the ECF around a nerve cell is replaced with an isotonic saline solution that contains potassium ions and other solutes at concentrations very close to the ECF concentrations of a normal cell, the result is

Accepted Answer

A)   no resting membrane potential.
B)   hyperpolarized membrane.
C)   depolarized membrane.
D)   a resting membrane potential close to its normal value.
E)   None of these choices is correct.F) All of the above
G) C) and E)

Question 5

As the strength of a stimulus is increased, the

Accepted Answer

A)   amplitude of the action potential increases.
B)   duration of the action potential increases.
C)   frequency of occurrence of action potentials increases.
D)   resonance of action potentials increases.
E)   height of the action potentials increases.F) C) and E)
G) B) and C)

Question 6

Digestion of food is regulated by the

Accepted Answer

A)   sensory division.
B)   sympathetic division of the ANS.
C)   parasympathetic division of the ANS.
D)   somatic nervous system.
E)   None of these choices are correct.F) D) and E)
G) C) and D)

Question 7

During depolarization of the plasma membrane,

Accepted Answer

A)   sodium ions move rapidly into the cell.
B)   potassium ions move rapidly out of the cell.
C)   membrane permeability to sodium ions decreases.
D)   the outside of the cell becomes positively charged relative to the inside.
E)   sodium ions move rapidly out of the cell.F) A) and B)
G) A) and C)

Question 8

A neuromodulator

Accepted Answer

A)   acts as a neurotransmitter.
B)   inactivates neurotransmitters.
C)   is a receptor site for a neurotransmitter.
D)   has no influence on the amount of neurotransmitter released.
E)   is a substance released from neurons that influences the sensitivity of neurons to neurotransmitters.F) B) and E)
G) C) and E)

Question 9

Neurotransmitters are released from the

Accepted Answer

A)   epineurium.
B)   synaptic cleft.
C)   presynaptic terminal.
D)   postsynaptic membrane.
E)   calcium channels.F) A) and B)
G) B) and E)

Question 10

The central nervous system

Accepted Answer

A)   is the site for processing information.
B)   initiates visual and auditory stimuli.
C)   consists of 43 pairs of nerves.
D)   is totally involuntary.
E)   does not interact with the peripheral nervous system.F) C) and D)
G) D) and E)

Question 11

The motor neurons responsible for making a fist are

Accepted Answer

A)   tripolar.
B)   bipolar.
C)   multipolar.
D)   pseudo-unipolar.
E)   None of these choices are correct.F) All of the above
G) A) and E)

Question 12

Gray matter consists of bundles of myelinated axons.

Accepted Answer

A) True 
 B)False

Question 13

Which of the following is true?

Accepted Answer

A)   The resting plasma membrane is more permeable to Na+ than K+.
B)   The resting membrane potential never reaches an equilibrium point.
C)   The resting membrane potential is proportional to the tendency for K+ to diffuse out of the cell.
D)   Negatively charged Cl- ions are attracted by negative charges in the cell.
E)   The purpose of the sodium-potassium exchange pump is to create an equilibrium of ion concentrations.F) A) and D)
G) A) and C)

Question 14

Protein synthesis in neurons occurs in

Accepted Answer

A)   axons.
B)   dendrites.
C)   cell bodies or soma.
D)   terminal boutons.
E)   node of Ranvier.F) C) and D)
G) B) and E)

Question 15

The function of acetylcholinesterase is to

Accepted Answer

A)   open voltage-gated sodium gates.
B)   breakdown acetylcholine in the synapse.
C)   produce an IPSP on the postsynaptic membrane.
D)   metabolize norepinephrine.E) B) and C)
F) None of the above

Question 16

____________ are neuroglia cells that are macrophages.

Accepted Answer

The answer of ____________ are neuroglia cells that are macrophages....

Question 17

In hyperpolarization

Accepted Answer

A)   K+ ions tend to diffuse out of the cell.
B)   the plasma membrane's permeability to K+ decreases.
C)   the resting membrane potential moves closer to zero.
D)   Na+ ions enter the cell in large numbers.
E)   the resting membrane potential becomes more positive.F) C) and D)
G) D) and E)

Question 18

The autonomic nervous system

Accepted Answer

A)   stimulates skeletal muscle contractions.
B)   has two sets of neurons in a series.
C)   is involved in problem solving.
D)   is under voluntary control.
E)   does not include the central nervous system.F) B) and E)
G) A) and E)

Question 19

The peripheral nervous system includes the

Accepted Answer

A)   brain.
B)   spinal cord.
C)   cranial nerves.
D)   blood-brain barrier.
E)   cerebellum.F) A) and C)
G) A) and D)

Question 20

The opening of more and more Na+ ion channels during depolarization

Accepted Answer

A)   is the result of the sodium-potassium exchange pump.
B)   is an example of a positive feedback cycle.
C)   is possible only if K+ channels remain closed.
D)   is the cause of the afterpotential.
E)   is an example of a negative feedback cycle.F) A) and B)
G) All of the above

Exam 11: Functional Organization of Nervous Tissue

The motor neurons responsible for making a fist are

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-The figure is a process figure of the chemical synapse. What does "A" represent?

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Gray matter consists of bundles of myelinated axons.

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-The figure illustrates the Action Potential. What does "B" represent?

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The central nervous system

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A neuroglial cell that is a major component of the blood-brain barrier is the

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Which of the following is true?

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____________ are neuroglia cells that are macrophages.

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The function of acetylcholinesterase is to

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During depolarization of the plasma membrane,

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A neuromodulator

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The opening of more and more Na+ ion channels during depolarization

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In hyperpolarization

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The peripheral nervous system includes the

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Neurotransmitters are released from the

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Digestion of food is regulated by the

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Protein synthesis in neurons occurs in

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As the strength of a stimulus is increased, the

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The autonomic nervous system

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If the ECF around a nerve cell is replaced with an isotonic saline solution that contains potassium ions and other solutes at concentrations very close to the ECF concentrations of a normal cell, the result is

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