Question 1

Based on function,the vast majority of neurons are

Accepted Answer

A)  sensory neurons.
B)  motor neurons.
C)  unipolar neurons.
D)  bipolar neurons.
E)  interneurons.F) D) and E)
G) A) and D)

Question 2

The size of an EPSP is independent of the amount of excitatory neurotransmitter that is released by the presynaptic cell.

Accepted Answer

A) True 
 B)False

Question 3

As it moves from the tip of a dendrite to the axon hillock,a postsynaptic potential will maintain a constant amplitude.

Accepted Answer

A) True 
 B)False

Question 4

Chemical synapses are more common than electrical synapses.

Accepted Answer

A) True 
 B)False

Question 5

What effect would an acetylcholinesterase inhibitor have on an acetylcholine synapse
 Describe how you think it would influence muscle function.What effect do serotonin reuptake inhibitors have on serotonin synapses
 Describe how you think they influence mood.

Accepted Answer

Ach E inhibitors cause more Ach to be in...

Question 6

The separation of oppositely charged ionic particles across a resting neuron's membrane results in a potential that is measured as a

Accepted Answer

A)  current.
B)  voltage.
C)  conductance.
D)  resistance.E) None of the above
F) B) and C)

Question 7

In a mixed nerve

Accepted Answer

A)  some axons transmit sensory information and others transmit motor information.
B)  individual axons transmit both sensory and motor information.
C)  chemical synapses occur along with electrical synapses.
D)  astrocytes are interspersed with ependymal cells.E) All of the above
F) A) and B)

Question 8

A nerve cell that has dendrites but no axons is categorized as a(n)___________ neuron.

Accepted Answer

The answer of A nerve cell that has dendrites but...

Question 9

Contrast chemically gated and voltage-gated channels.How do their functions differ
 In which segments of a neuron are they found

Accepted Answer

Chemically gated channels are generally ...

Question 10

You walk into a restaurant and amidst the sights,sounds,and smells of food preparation,you notice that you have begun to salivate.This is evidence that a particular neuronal circuit has been activated.Which one

Accepted Answer

A)  Converging
B)  Diverging
C)  Reverberating
D)  Parallel-after-discharge
E)  None of the choices is correct.F) A) and B)
G) C) and E)

Question 11

An action potential involves a temporary reversal of polarity across the plasma membrane (that is,the inside of the axon becomes relatively positive compared to the interstitial fluid).

Accepted Answer

A) True 
 B)False

Question 12

The nervous system contains more neurons than glial cells.

Accepted Answer

A) True 
 B)False

Question 13

The type of transport protein that moves a substance down its concentration gradient is a

Accepted Answer

A)  channel.
B)  pump.C) A) and B)
D) undefined

Question 14

To measure the resting potential of a neuron,a physiologist would place

Accepted Answer

A)  two electrodes inside the neuron.
B)  one microelecrode inside the neuron and another in the interstitial fluid.
C)  one electrode inside the cell and another inside another cell.
D)  one electrode inside the cell and another outside the body.E) All of the above
F) B) and D)

Question 15

The type of voltage-gated channel that possesses an inactivation gate that temporarily closes after the channel is active is the

Accepted Answer

A)  voltage-gated potassium channel.
B)  voltage-gated sodium channel.
C)  voltage-gated calcium channel.
D)  voltage-gated chloride channel.E) All of the above
F) A) and C)

Question 16

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) B) and E)
G) A) and E)

Question 17

Neurotransmitter is released from the synaptic knob by exocytosis,and it then diffuses across the synaptic cleft.

Accepted Answer

A) True 
 B)False

Question 18

Which functional class of neurons lies entirely within the central nervous system

Accepted Answer

A)  Bipolar neurons
B)  Sensory neurons
C)  Interneurons
D)  Unipolar neurons
E)  Motor neuronsF) A) and D)
G) A) and E)

Question 19

A neurotransmitter binds chemically gated ion channels on the postsynaptic cell,causing a depolarization.Functionally,this neurotransmitter can be classified as excitatory.

Accepted Answer

A) True 
 B)False

Question 20

Somatic motor neuron axons fall into the category of

Accepted Answer

A)  A fibers.
B)  B fibers.
C)  C fibers.
D)  D fibers.E) A) and B)
F) None of the above

Exam 12: Nervous System: Nervous Tissue

When transmission occurs at a synapse,neurotransmitter is released by

Correct AnswerverifiedShow Answer

The nervous system contains more neurons than glial cells.

Correct AnswerverifiedShow Answer

To measure the resting potential of a neuron,a physiologist would place

Correct AnswerverifiedShow Answer

Based on function,the vast majority of neurons are

Correct AnswerverifiedShow Answer

What effect would an acetylcholinesterase inhibitor have on an acetylcholine synapse Describe how you think it would influence muscle function.What effect do serotonin reuptake inhibitors have on serotonin synapses Describe how you think they influence mood.

Correct AnswerverifiedAch E inhibitors cause more Ach to be in...View AnswerShow Answer

An action potential involves a temporary reversal of polarity across the plasma membrane (that is,the inside of the axon becomes relatively positive compared to the interstitial fluid).

Correct AnswerverifiedShow Answer

In a mixed nerve

Correct AnswerverifiedShow Answer

You walk into a restaurant and amidst the sights,sounds,and smells of food preparation,you notice that you have begun to salivate.This is evidence that a particular neuronal circuit has been activated.Which one

Correct AnswerverifiedShow Answer

The type of transport protein that moves a substance down its concentration gradient is a

Correct AnswerverifiedShow Answer

Somatic motor neuron axons fall into the category of

Correct AnswerverifiedShow Answer

Chemical synapses are more common than electrical synapses.

Correct AnswerverifiedShow Answer

As it moves from the tip of a dendrite to the axon hillock,a postsynaptic potential will maintain a constant amplitude.

Correct AnswerverifiedShow Answer

The size of an EPSP is independent of the amount of excitatory neurotransmitter that is released by the presynaptic cell.

Correct AnswerverifiedShow Answer

A neurotransmitter binds chemically gated ion channels on the postsynaptic cell,causing a depolarization.Functionally,this neurotransmitter can be classified as excitatory.

Correct AnswerverifiedShow Answer

Contrast chemically gated and voltage-gated channels.How do their functions differ In which segments of a neuron are they found

Correct AnswerverifiedChemically gated channels are generally ...View AnswerShow Answer

The separation of oppositely charged ionic particles across a resting neuron's membrane results in a potential that is measured as a

Correct AnswerverifiedShow Answer

The type of voltage-gated channel that possesses an inactivation gate that temporarily closes after the channel is active is the

Correct AnswerverifiedShow Answer

Which functional class of neurons lies entirely within the central nervous system

Correct AnswerverifiedShow Answer

Neurotransmitter is released from the synaptic knob by exocytosis,and it then diffuses across the synaptic cleft.

Correct AnswerverifiedShow Answer

A nerve cell that has dendrites but no axons is categorized as a(n)___________ neuron.

Correct AnswerverifiedShow Answer

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Ach E inhibitors cause more Ach to be in...
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Chemically gated channels are generally ...
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