Question 1

The spinal cord is part of the central nervous system.

Accepted Answer

A) True 
 B)False

Question 2

Hyperpolarization of a neuron results from

Accepted Answer

A)   either the entry of an anion or the exit of a cation.
B)   the entry of any ion.
C)   either the entry of a cation or the exit of an anion.
D)   the entrance of either sodium or potassium.E) B) and D)
F) All of the above

Question 3

A neuron conducting an impulse from the stomach wall to the CNS would be classified as a(n)  ________ neuron.

Accepted Answer

A)   autonomic motor
B)   somatic sensory
C)   somatic motor
D)   visceral sensoryE) A) and B)
F) B) and C)

Question 4

Any neurotransmitter that generates an IPSP is functionally classified as inhibitory.

Accepted Answer

A) True 
 B)False

Question 5

Chemically gated ion channels are mainly found in the ________ segment of a neuron.

Accepted Answer

A)   initial
B)   receptive
C)   conductive
D)   transmissiveE) B) and D)
F) A) and B)

Question 6

Substance P is a neuropeptide that functions in the transmission of pain information to the brain.

Accepted Answer

A) True 
 B)False

Question 7

The portion of the nervous system that has voluntary control over skeletal muscles is the ________ division.

Accepted Answer

A)   autonomic motor
B)   somatic sensory
C)   somatic motor
D)   visceral sensoryE) B) and C)
F) A) and D)

Question 8

The connective tissue wrapping that surrounds bundles (fascicles)  of axons is the

Accepted Answer

A)   epineurium.
B)   endoneurium.
C)   perineurium.
D)   endosteum.
E)   periosteum.F) C) and D)
G) A) and B)

Question 9

A graph of an EPSP would plot time against a voltage trace that would resemble

Accepted Answer

A)   a hill where the high point approaches the threshold value.
B)   a hill where the high point is the farthest away from the threshold value.
C)   a valley where the low point approaches the threshold value.
D)   a valley where the low point is the farthest away from the threshold value.E) All of the above
F) A) and B)

Question 10

Select all that are true of nitric oxide.

Accepted Answer

A)   It is a large, polar molecule.
B)   It is a gas.
C)   It is released by postsynaptic neurons.
D)   It can cause smooth muscles to contract, resulting in vasoconstriction.E) A) and C)
F) A) and B)

Question 11

Which is not a type of neuronal pool?

Accepted Answer

A)   Converging
B)   Triangular-pre-discharge
C)   Diverging
D)   Parallel-after-discharge
E)   ReverberatingF) C) and D)
G) B) and D)

Question 12

Billions of CNS interneurons are grouped in complex patterns called neuronal

Accepted Answer

A)   networks.
B)   complexes.
C)   pools.
D)   meshes.
E)   webs.F) C) and D)
G) B) and E)

Question 13

Transmission of nerve impulses along myelinated axons requires more energy than transmission along unmyelinated axons.

Accepted Answer

A) True 
 B)False

Question 14

Potassium has a higher concentration

Accepted Answer

A)   inside the cell versus outside the cell, and sodium is also more concentrated inside versus outside the cell.
B)   inside the cell versus outside the cell, whereas sodium has a higher concentration outside versus inside the cell.
C)   outside the cell versus inside the cell, and sodium is also more concentrated outside versus inside the cell.
D)   outside the cell versus inside the cell, whereas sodium has a higher concentration inside versus outside the cell.E) A) and C)
F) A) and B)

Question 15

Which of the following describes how a presynaptic neuron would communicate a strong signal to a postsynaptic neuron?

Accepted Answer

A)   Increasing the frequency of its action potentials
B)   Increasing the magnitude (voltage change)  of each action potential
C)   Changing the direction the action potentials are traveling down its conductive segment
D)   Changing the destination of the action potentialsE) A) and C)
F) A) and D)

Question 16

In the CNS all axons are myelinated, but in the PNS some are myelinated and some are unmyelinated.

Accepted Answer

A) True 
 B)False

Question 17

When a neuromodulator slows the reuptake of a neurotransmitter or causes expression of an increased number of receptors on postsynaptic neurons, the effect is called

Accepted Answer

A)   facilitation.
B)   temporal summation.
C)   spatial summation.
D)   presynaptic potentiation.
E)   recruitment.F) B) and C)
G) A) and E)

Question 18

What structures extend into the axon and dendrite of a neuron to provide tensile strength?

Accepted Answer

A)   Motor filaments
B)   Nissl bodies
C)   Telodendria
D)   Neurofibrils
E)   Collateral fibersF) A) and D)
G) A) and C)

Question 19

Neural stem cells in the CNS

Accepted Answer

A)   have no known function.
B)   can only form glial cells.
C)   can form new neurons throughout the CNS.
D)   can form new neurons in only certain portions of the CNS such as the hippocampus.
E)   can migrate to the PNS as needed.F) B) and E)
G) A) and B)

Question 20

When transmission occurs at a synapse, neurotransmitter is released by

Accepted Answer

A)   the presynaptic neuron's synaptic knob into the synaptic cleft.
B)   the postsynaptic neuron's dendrites into the synaptic cleft.
C)   the presynaptic neuron's dendrites into the synaptic cleft.
D)   the presynaptic neuron's soma into synaptic vesicles.
E)   the postsynaptic neuron's telodendria into the axon hillock.F) A) and D)
G) A) and B)

Exam 12: Nervous System: Nervous Tissue

Transmission of nerve impulses along myelinated axons requires more energy than transmission along unmyelinated axons.

Correct AnswerverifiedShow Answer

The spinal cord is part of the central nervous system.

Correct AnswerverifiedShow Answer

A neuron conducting an impulse from the stomach wall to the CNS would be classified as a(n) ________ neuron.

Correct AnswerverifiedShow Answer

Which is not a type of neuronal pool?

Correct AnswerverifiedShow Answer

Billions of CNS interneurons are grouped in complex patterns called neuronal

Correct AnswerverifiedShow Answer

Any neurotransmitter that generates an IPSP is functionally classified as inhibitory.

Correct AnswerverifiedShow Answer

What structures extend into the axon and dendrite of a neuron to provide tensile strength?

Correct AnswerverifiedShow Answer

When a neuromodulator slows the reuptake of a neurotransmitter or causes expression of an increased number of receptors on postsynaptic neurons, the effect is called

Correct AnswerverifiedShow Answer

When transmission occurs at a synapse, neurotransmitter is released by

Correct AnswerverifiedShow Answer

Hyperpolarization of a neuron results from

Correct AnswerverifiedShow Answer

In the CNS all axons are myelinated, but in the PNS some are myelinated and some are unmyelinated.

Correct AnswerverifiedShow Answer

The portion of the nervous system that has voluntary control over skeletal muscles is the ________ division.

Correct AnswerverifiedShow Answer

The connective tissue wrapping that surrounds bundles (fascicles) of axons is the

Correct AnswerverifiedShow Answer

Chemically gated ion channels are mainly found in the ________ segment of a neuron.

Correct AnswerverifiedShow Answer

Select all that are true of nitric oxide.

Correct AnswerverifiedShow Answer

A graph of an EPSP would plot time against a voltage trace that would resemble

Correct AnswerverifiedShow Answer

Potassium has a higher concentration

Correct AnswerverifiedShow Answer

Substance P is a neuropeptide that functions in the transmission of pain information to the brain.

Correct AnswerverifiedShow Answer

Neural stem cells in the CNS

Correct AnswerverifiedShow Answer

Which of the following describes how a presynaptic neuron would communicate a strong signal to a postsynaptic neuron?

Correct AnswerverifiedShow Answer

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