Question 1

Absolute refractory periods occur in the axon of the cell; relative refractory periods occur in the dendrite or soma of the cell.

Accepted Answer

A) True 
 B)False

Question 2

The depolarization of a neuron is caused by the influx of the positively charged sodium ion into the cell.

Accepted Answer

A) True 
 B)False

Question 3

Serotonin is an example of a(n) :

Accepted Answer

A)  amino acid neurotransmitter.
B)  amine neurotransmitter.
C)  acetylcholine derivative.
D)  neuropeptide neurotransmitter.

Question 4

The lack of dopamine is linked to the symptoms of Parkinson's disease.

Accepted Answer

A) True 
 B)False

Question 5

Define IPSP and EPSP.

Accepted Answer

IPSP stands for Inhibitory Postsynaptic ...

Question 6

Acetylcholine is in the same class of neurotransmitters as:

Accepted Answer

A)  serotonin.
B)  histamine.
C)  dopamine.
D)  none of the above.

Question 7

Some neurotransmitters use cyclic adenosine monophosphate as a second messenger to cause a response in the postsynaptic cell.

Accepted Answer

A) True 
 B)False

Question 8

The magnitude of the action potential peaks when the sodium channels close.

Accepted Answer

A) True 
 B)False

Question 9

Enkephalins and endorphins are subclasses of amines that are pain relievers.

Accepted Answer

A) True 
 B)False

Question 10

A neurotransmitter can be excitatory or inhibitory, not both.

Accepted Answer

A) True 
 B)False

Question 11

Some neurotransmitters can be transported back to the synaptic knob and be reused by the neuron.

Accepted Answer

A) True 
 B)False

Question 12

Three structures make up a synapse: a synaptic knob, a synaptic cleft, and the plasma membrane of the postsynaptic neuron.

Accepted Answer

A) True 
 B)False

Question 13

Many biologists believe that amino acids are among the most common neurotransmitters in the CNS.

Accepted Answer

A) True 
 B)False

Question 14

Explain the process of an action potential moving down a neuron.

Accepted Answer

An action potential is the electrical si...

Question 15

Compared with the outside of the neuron, the inside has a(n)  ____ charge.

Accepted Answer

A)  positive
B)  negative
C)  equal
D)  None of the above are correct.

Question 16

Neurons are the only living cells that maintain a difference in the concentration of ions across their membranes.

Accepted Answer

A) True 
 B)False

Question 17

The neurotransmitter acetylcholine always has an excitatory effect.

Accepted Answer

A) True 
 B)False

Question 18

In depolarization the membrane potential moves toward zero, whereas in hyperpolarization the membrane potential moves away from zero.

Accepted Answer

A) True 
 B)False

Question 19

The sodium-potassium pump actively pumps three potassium ions out of the neuron and two sodium ions into the neuron.

Accepted Answer

A) True 
 B)False

Question 20

The opening of stimulus-gated channels is always followed by the opening of voltage-gated channels.

Accepted Answer

A) True 
 B)False

Exam 19: Nerve Signaling

Define IPSP and EPSP.

Correct AnswerAnswered by ExamLex AIIPSP stands for Inhibitory Postsynaptic ...View AnswerShow Answer

Absolute refractory periods occur in the axon of the cell; relative refractory periods occur in the dendrite or soma of the cell.

Correct AnswerverifiedShow Answer

Compared with the outside of the neuron, the inside has a(n) ____ charge.

Correct AnswerverifiedShow Answer

The lack of dopamine is linked to the symptoms of Parkinson's disease.

Correct AnswerverifiedShow Answer

Many biologists believe that amino acids are among the most common neurotransmitters in the CNS.

Correct AnswerverifiedShow Answer

A neurotransmitter can be excitatory or inhibitory, not both.

Correct AnswerverifiedShow Answer

Some neurotransmitters can be transported back to the synaptic knob and be reused by the neuron.

Correct AnswerverifiedShow Answer

Neurons are the only living cells that maintain a difference in the concentration of ions across their membranes.

Correct AnswerverifiedShow Answer

Acetylcholine is in the same class of neurotransmitters as:

Correct AnswerverifiedShow Answer

Three structures make up a synapse: a synaptic knob, a synaptic cleft, and the plasma membrane of the postsynaptic neuron.

Correct AnswerverifiedShow Answer

The magnitude of the action potential peaks when the sodium channels close.

Correct AnswerverifiedShow Answer

Explain the process of an action potential moving down a neuron.

Correct AnswerAnswered by ExamLex AIAn action potential is the electrical si...View AnswerShow Answer

The opening of stimulus-gated channels is always followed by the opening of voltage-gated channels.

Correct AnswerverifiedShow Answer

The sodium-potassium pump actively pumps three potassium ions out of the neuron and two sodium ions into the neuron.

Correct AnswerverifiedShow Answer

The neurotransmitter acetylcholine always has an excitatory effect.

Correct AnswerverifiedShow Answer

Some neurotransmitters use cyclic adenosine monophosphate as a second messenger to cause a response in the postsynaptic cell.

Correct AnswerverifiedShow Answer

Enkephalins and endorphins are subclasses of amines that are pain relievers.

Correct AnswerverifiedShow Answer

In depolarization the membrane potential moves toward zero, whereas in hyperpolarization the membrane potential moves away from zero.

Correct AnswerverifiedShow Answer

The depolarization of a neuron is caused by the influx of the positively charged sodium ion into the cell.

Correct AnswerverifiedShow Answer

Serotonin is an example of a(n) :

Correct AnswerverifiedShow Answer

Correct Answer
Answered by ExamLex AI
IPSP stands for Inhibitory Postsynaptic ...
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
Answered by ExamLex AI
An action potential is the electrical si...
View Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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