Question 1

Which neuropeptide neurotransmitter is released from fibers transmitting sensory information about pain and temperature?

Accepted Answer

A)   substance P
B)   opioids
C)   neuropeptide Y
D)   endorphinE) None of the above
F) All of the above A

Question 2

Discuss the neuroglial cells that form the myelin sheaths in the CNS and the PNS and some of their differences.

Accepted Answer

Oligodendrocytes wrap the axons of certa...

Question 3

The conducting region of the neuron is the:

Accepted Answer

A)   dendrites.
B)   axon terminals (synaptic knobs) .
C)   cell body.
D)   axon.E) B) and D)
F) B) and C) D

Question 4

Which of the following is the primary factor in the maintenance of a negative charge during resting membrane potential?

Accepted Answer

A)   sodium -potassium pump
B)   ligand -gated channels
C)   leak channels
D)   voltage -gated channelsE) B) and C)
F) A) and D)

Question 5

Which of the following is the most important excitatory neurotransmitter in the CNS?

Accepted Answer

A)   dopamine
B)   GABA
C)   glutamate
D)   glycineE) A) and C)
F) B) and C)

Question 6

What type of postsynaptic potential would be more likely to promote an action potential - an IPSP or
EPSP? Explain.

Accepted Answer

A small, local depolarization called an ...

Question 7

Neurotransmitters that bind ionotropic receptors control:

Accepted Answer

A)   the activation of G -proteins inside the postsynaptic neuron.
B)   some metabolic process inside the postsynaptic neuron.
C)   the formation of a second messenger inside the postsynaptic neuron.
D)   the movement of ions into or out of the postsynaptic neuron.E) All of the above
F) A) and B)

Question 8

What ion triggers synaptic vesicles to release neurotransmitters into the synaptic cleft?

Accepted Answer

A)   magnesium
B)   sodium
C)   chlorine
D)   calciumE) B) and C)
F) A) and B) D

Question 9

What is NOT a function of the nervous system?

Accepted Answer

A)   integrate sensory information
B)   sense the internal and external environments
C)   control effectors
D)   direct long -term functions such as growthE) None of the above
F) A) and B)

Question 10

Which number on the graph represents when voltage -gated sodium channels are open? -gated sodium channels are open?   A)  1 B)  2 C)  3 D)  4" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   1
B)   2
C)   3
D)   4E) C) and D)
F) All of the above

Question 11

Describe the type of neural circuit that controls skeletal muscle movement.

Accepted Answer

Converging circuits are important for co...

Question 12

Electrical synapses are faster than chemical synapses due to the presence of gap junctions between cells.

Accepted Answer

A) True 
 B)False

Question 13

Discuss the two main factors to influence conduction speed of an action potential.

Accepted Answer

Conduction speed is influenced by two ma...

Question 14

Since Jerry's accident, he has had no sensations in his injured leg. Based on the functional classifications of neurons, explain the type of neuron that has been damaged. Why has he not regained lost nerve function?

Accepted Answer

Jerry has damaged a sensory, or afferent...

Question 15

Determine the membrane potential (mV)  during the relative refractory period.

Accepted Answer

A)   +30 mV
B)   -85 mV
C)   -55 mV
D)   +15 mVE) C) and D)
F) B) and C)

Question 16

What type of neuron is found within the CNS to perform the job of information processing?

Accepted Answer

A)   interneurons (association neurons) 
B)   motor (efferent)  neurons
C)   bipolar neurons
D)   sensory (afferent)  neuronsE) A) and B)
F) None of the above

Question 17

Which nervous system division is responsible for the integration of sensory information?

Accepted Answer

A)   visceral motor division
B)   somatic motor division
C)   central nervous system
D)   peripheral nervous systemE) None of the above
F) A) and B)

Question 18

Which of the following is an effect of myelination?

Accepted Answer

A)   Myelination increases the speed of conduction of action potentials.
B)   Myelination increases the rate of mitosis in damaged neurons.
C)   Myelination increases the rate at which phagocytosis occurs in the brain.
D)   Myelination increases the volume of cerebrospinal fluid in circulation.E) B) and D)
F) None of the above

Question 19

Neurotransmitters can be either excitatory or inhibitory depending upon the receptor present on the postsynaptic neuron.

Accepted Answer

A) True 
 B)False

Question 20

Within the PNS, a neuron will regenerate only if:

Accepted Answer

A)   the surrounding neuroglia regenerate first.
B)   the neuron was myelinated.
C)   the cell body remains intact.
D)   scar tissue is removed by phagocytosis.E) A) and D)
F) All of the above

Exam 11: Introduction to the Nervous System Nervous Tissue

Which neuropeptide neurotransmitter is released from fibers transmitting sensory information about pain and temperature?

Correct AnswerverifiedA

Discuss the neuroglial cells that form the myelin sheaths in the CNS and the PNS and some of their differences.

Correct AnswerverifiedOligodendrocytes wrap the axons of certa...View AnswerShow Answer

The conducting region of the neuron is the:

Correct AnswerverifiedD

Which of the following is the primary factor in the maintenance of a negative charge during resting membrane potential?

Correct AnswerverifiedShow Answer

Which of the following is the most important excitatory neurotransmitter in the CNS?

Correct AnswerverifiedShow Answer

What type of postsynaptic potential would be more likely to promote an action potential - an IPSP or EPSP? Explain.

Correct AnswerverifiedA small, local depolarization called an ...View AnswerShow Answer

Neurotransmitters that bind ionotropic receptors control:

Correct AnswerverifiedShow Answer

What ion triggers synaptic vesicles to release neurotransmitters into the synaptic cleft?

Correct AnswerverifiedD

What is NOT a function of the nervous system?

Correct AnswerverifiedShow Answer

Which number on the graph represents when voltage -gated sodium channels are open?

Correct AnswerverifiedShow Answer

Describe the type of neural circuit that controls skeletal muscle movement.

Correct AnswerverifiedConverging circuits are important for co...View AnswerShow Answer

Electrical synapses are faster than chemical synapses due to the presence of gap junctions between cells.

Correct AnswerverifiedShow Answer

Discuss the two main factors to influence conduction speed of an action potential.

Correct AnswerverifiedConduction speed is influenced by two ma...View AnswerShow Answer

Since Jerry's accident, he has had no sensations in his injured leg. Based on the functional classifications of neurons, explain the type of neuron that has been damaged. Why has he not regained lost nerve function?

Correct AnswerverifiedJerry has damaged a sensory, or afferent...View AnswerShow Answer

Determine the membrane potential (mV) during the relative refractory period.

Correct AnswerverifiedShow Answer

What type of neuron is found within the CNS to perform the job of information processing?

Correct AnswerverifiedShow Answer

Which nervous system division is responsible for the integration of sensory information?

Correct AnswerverifiedShow Answer

Which of the following is an effect of myelination?

Correct AnswerverifiedShow Answer

Neurotransmitters can be either excitatory or inhibitory depending upon the receptor present on the postsynaptic neuron.

Correct AnswerverifiedShow Answer

Within the PNS, a neuron will regenerate only if:

Correct AnswerverifiedShow Answer

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A

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Oligodendrocytes wrap the axons of certa...
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D

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What type of postsynaptic potential would be more likely to promote an action potential ^-an ^IPSPor ^E^PSP? Explain.

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A small, local depolarization called an ...
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D

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Which number on the graph represents when voltage ^-gated sodium channels are open?

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Converging circuits are important for co...
View Answer

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Conduction speed is influenced by two ma...
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Jerry has damaged a sensory, or afferent...
View Answer

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