Question 1

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

Accepted Answer

A) True 
 B)False

Question 2

The difference in electrical charge between the inside and outside of a membrane is called the membrane potential.

Accepted Answer

A) True 
 B)False

Question 3

The difference between sodium and potassium in the generation of action potential is that:

Accepted Answer

A)   sodium causes repolarization of the cell membrane, and potassium causes depolarization of the cell membrane.
B)   sodium causes unipolarization of the cell membrane, and potassium causes repolarization of the cell membrane.
C)   sodium causes repolarization, and potassium is not required in the action potential mechanism.
D)   sodium causes depolarization of the cell membrane, and potassium causes repolarization of the cell membrane.E) None of the above
F) A) and B)

Question 4

Within the nervous system, coding for the strength of a stimulus is accomplished through:

Accepted Answer

A)   changes in the magnitude of the action potential.
B)   changes in the length or duration of the action potential.
C)   the frequency of nerve impulses.
D)   an increase in the number of opening sodium channels.E) All of the above
F) B) and C)

Question 5

The first event to occur when an adequate stimulus is applied to a neuron is:

Accepted Answer

A)   the membrane potential moves immediately to a value of +30 mV.
B)   the potassium channels open.
C)   the sodium channels are inactivated.
D)   some of the sodium channels at the point of stimulation open.E) None of the above
F) B) and C)

Question 6

An inhibitory postsynaptic potential is produced through the hyperpolarization of the postsynaptic membrane.

Accepted Answer

A) True 
 B)False

Question 7

Which of the following statements about amino acid neurotransmitters is incorrect?

Accepted Answer

A)   They are among the most common neurotransmitters in the central nervous system (CNS) .
B)   They are all inhibitory neurotransmitters.
C)   Glycine is a widely distributed inhibitory neurotransmitter in the spinal cord.
D)   All of the above statements are correct.E) C) and D)
F) B) and C)

Question 8

Which neuron could transmit a nerve impulse the fastest?

Accepted Answer

A)   A small-diameter neuron without myelin
B)   A large-diameter neuron without myelin
C)   A large-diameter neuron with myelin
D)   A small-diameter neuron with myelinE) A) and B)
F) A) and D)

Question 9

If the threshold potential is surpassed, the full peak of the action potential is always reached.

Accepted Answer

A) True 
 B)False

Question 10

How long a memory lasts is related to what occurs at a synapse.

Accepted Answer

A) True 
 B)False

Question 11

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 12

Name and briefly describe the different types of neurotransmitters used by the nervous system.

Accepted Answer

Neurotransmitters are chemical messenger...

Question 13

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 14

There is a time when a neuron will not send a nerve impulse no matter how strong the stimulus is.

Accepted Answer

A) True 
 B)False

Question 15

Which of the following antidepressants acts by blocking the action of monoamine oxidase (MAO) ?

Accepted Answer

A)   Phenelzine
B)   Imipramine
C)   Amitriptyline
D)   CocaineE) All of the above
F) None of the above

Question 16

Which of the following is not one of the main chemical classes of neurotransmitters?

Accepted Answer

A)   Triglycerides
B)   Amines
C)   Amino acids
D)   NeuropeptidesE) None of the above
F) B) and C)

Question 17

Which of the following is not used by the body as a neurotransmitter?

Accepted Answer

A)   Nitric oxide
B)   Peroxide
C)   Carbon monoxide
D)   All of the above are used by the body as neurotransmitters.E) A) and D)
F) All of the above

Question 18

Explain the ways in which the activity of the neurotransmitter is stopped at the postsynaptic receptor.

Accepted Answer

The activity of a neurotransmitter at th...

Question 19

The action potential is called an all-or-none response, because if the threshold potential is surpassed, the full peak of the action is always reached; if the threshold potential is not surpassed, no action potential will occur.

Accepted Answer

A) True 
 B)False

Exam 19: Nerve Signaling

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

Correct Answer
verified

Which of the following is not used by the body as a neurotransmitter?

Correct Answer
verified

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

Correct Answer
verified

The difference between sodium and potassium in the generation of action potential is that:

Correct Answer
verified

Which of the following antidepressants acts by blocking the action of monoamine oxidase (MAO) ?

Correct Answer
verified

Within the nervous system, coding for the strength of a stimulus is accomplished through:

Correct Answer
verified

An inhibitory postsynaptic potential is produced through the hyperpolarization of the postsynaptic membrane.

Correct Answer
verified

Explain the ways in which the activity of the neurotransmitter is stopped at the postsynaptic receptor.

Correct Answer
Answered by ExamLex AI
The activity of a neurotransmitter at th...
View Answer

Name and briefly describe the different types of neurotransmitters used by the nervous system.

Correct Answer
Answered by ExamLex AI
Neurotransmitters are chemical messenger...
View Answer

The action potential is called an all-or-none response, because if the threshold potential is surpassed, the full peak of the action is always reached; if the threshold potential is not surpassed, no action potential will occur.

Correct Answer
verified

Which neuron could transmit a nerve impulse the fastest?

Correct Answer
verified

There is a time when a neuron will not send a nerve impulse no matter how strong the stimulus is.

Correct Answer
verified

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

Correct Answer
verified

Which of the following statements about amino acid neurotransmitters is incorrect?

Correct Answer
verified

The first event to occur when an adequate stimulus is applied to a neuron is:

Correct Answer
verified

How long a memory lasts is related to what occurs at a synapse.

Correct Answer
verified

Which of the following is not one of the main chemical classes of neurotransmitters?

Correct Answer
verified

If the threshold potential is surpassed, the full peak of the action potential is always reached.

Correct Answer
verified

The difference in electrical charge between the inside and outside of a membrane is called the membrane potential.

Correct Answer
verified

Exam 19: Nerve Signaling

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

Correct AnswerverifiedShow Answer

Which of the following is not used by the body as a neurotransmitter?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The difference between sodium and potassium in the generation of action potential is that:

Correct AnswerverifiedShow Answer

Which of the following antidepressants acts by blocking the action of monoamine oxidase (MAO) ?

Correct AnswerverifiedShow Answer

Within the nervous system, coding for the strength of a stimulus is accomplished through:

Correct AnswerverifiedShow Answer

An inhibitory postsynaptic potential is produced through the hyperpolarization of the postsynaptic membrane.

Correct AnswerverifiedShow Answer

Explain the ways in which the activity of the neurotransmitter is stopped at the postsynaptic receptor.

Correct AnswerAnswered by ExamLex AIThe activity of a neurotransmitter at th...View AnswerShow Answer

Name and briefly describe the different types of neurotransmitters used by the nervous system.

Correct AnswerAnswered by ExamLex AINeurotransmitters are chemical messenger...View AnswerShow Answer

The action potential is called an all-or-none response, because if the threshold potential is surpassed, the full peak of the action is always reached; if the threshold potential is not surpassed, no action potential will occur.

Correct AnswerverifiedShow Answer

Which neuron could transmit a nerve impulse the fastest?

Correct AnswerverifiedShow Answer

There is a time when a neuron will not send a nerve impulse no matter how strong the stimulus is.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following statements about amino acid neurotransmitters is incorrect?

Correct AnswerverifiedShow Answer

The first event to occur when an adequate stimulus is applied to a neuron is:

Correct AnswerverifiedShow Answer

How long a memory lasts is related to what occurs at a synapse.

Correct AnswerverifiedShow Answer

Which of the following is not one of the main chemical classes of neurotransmitters?

Correct AnswerverifiedShow Answer

If the threshold potential is surpassed, the full peak of the action potential is always reached.

Correct AnswerverifiedShow Answer

The difference in electrical charge between the inside and outside of a membrane is called the membrane potential.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
Answered by ExamLex AI
The activity of a neurotransmitter at th...
View Answer

Correct Answer
Answered by ExamLex AI
Neurotransmitters are chemical messenger...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified