Question 1

-The figure illustrates changes in the membrane potential during an action potential. What does "D" represent?
A) Repolarization
B) Depolarization
C) Local potential
D) Threshold
E) Afterpotential

Accepted Answer

The answer of 
-The figure illustrates changes in the membrane...

Question 2

Any two EPSPs will override one IPSP.

Accepted Answer

A) True 
 B)False

Question 3

Neurotransmitters are released from the ________.

Accepted Answer

A)   epineurium
B)   synaptic cleft
C)   presynaptic terminal
D)   postsynaptic membrane
E)   Ca2+ channels

Question 4

During depolarization of the plasma membrane,

Accepted Answer

A)   Na+ moves rapidly into the cell.
B)   K+ moves rapidly out of the cell.
C)   membrane permeability to Na+ decreases.
D)   the outside of the cell becomes positively charged relative to the inside.
E)   Na+ moves rapidly out of the cell.

Question 5

Suppose both excitatory and inhibitory neurons synapse with a single postsynaptic neuron. What determines if an action potential is initiated in the postsynaptic neuron?

Accepted Answer

A)   The kind of neuron involved
B)   The size of the neuron involved
C)   Whether the neuron is myelinated or non-myelinated
D)   The number of EPSPs in relation to the number of IPSPs
E)   This situation is not possible in humans.

Question 6

Which of the following is responsible for problem-solving skills?

Accepted Answer

A)   Central nervous system
B)   Peripheral nervous system
C)   Somatic nervous system
D)   Autonomic nervous system
E)   None of the choices are correct.

Question 7

For the resting membrane potential, increasing the Na+ concentration in the ECF results in

Accepted Answer

A)   hyperpolarization.
B)   depolarization.
C)   hypopolarization.
D)   little change in membrane potential.
E)   There is not enough information to determine the results.

Question 8

-The figure illustrates changes in the membrane potential during an action potential. What does "A" represent?
A) Repolarization
B) Depolarization
C) Local potential
D) Threshold
E) Afterpotential

Accepted Answer

The answer of 
-The figure illustrates changes in the membrane...

Question 9

Dendrites

Accepted Answer

A)   are the input part of the neuron.
B)   conduct action potentials away from the cell body.
C)   are generally long and unbranched.
D)   form synapses with the microglia.
E)   contain the trigger zone.

Question 10

Which of the following statements concerning myelination is true?

Accepted Answer

A)   Unmyelinated axons rest in invaginations of Schwann cells or oligodendrocytes.
B)   Myelination will not influence the speed of conduction of action potentials.
C)   The myelin sheath inhibits the flow of electrical charges at nodes.
D)   The myelin sheath is a protein wrapping.
E)   The myelin sheath does not electrically insulate the axons from one another.

Question 11

Arrange the events of synaptic transmission in correct sequence.
(1)  Na+ diffuses into the cell and cause a local potential
(2)  Neurotransmitter binds with receptor on postsynaptic cell
(3)  Neurotransmitter diffuses across the synaptic cleft
(4)  Membrane permeability to Na+ on postsynaptic cell increases
(5)  Action potential causes release of neurotransmitter

Accepted Answer

A)   5, 2, 3, 4, 1
B)   5, 2, 3, 1, 4
C)   5, 3, 4, 1, 2
D)   5, 4, 3, 2, 1
E)   5, 3, 2, 4, 1

Question 12

The peripheral nervous system includes the ________.

Accepted Answer

A)   brain
B)   spinal cord
C)   cranial nerves
D)   blood-brain barrier
E)   cerebellum

Question 13

A neuron within the central nervous system that carries action potentials from one neuron to another is called a/an ________.

Accepted Answer

A)   motor neuron
B)   sensory neuron
C)   afferent neuron
D)   efferent neuron
E)   interneuron

Question 14

A local potential

Accepted Answer

A)   does not occur until threshold.
B)   transmits information from one cell to another.
C)   might be a depolarization event but cannot be a hyperpolarization event.
D)   increases or decreases in direct proportion to the stimulus strength.
E)   does not alter resting membrane potential.

Question 15

Which of the following statements accurately describe events that occur as a result of a local potential reaching threshold?

Accepted Answer

A)   Activation gates of Na+ channels begin to close.
B)   Inactivation gates of Na+ channels begin to open.
C)   A positive feedback cycle develops in which depolarization causes activation gates of Na+ channels to open.
D)   K+ channels begin to close.
E)   Both "Inactivation gates of Na+ channels begin to open" and "A positive feedback cycle develops in which depolarization causes activation gates of Na+ channels to open" are correct.

Question 16

Cerebrospinal fluid is produced by ________ cells.

Accepted Answer

The answer of Cerebrospinal fluid is produced by ________ cells....

Question 17

-The figure is a process figure of the chemical synapse. What does "D" represent?
A) Postsynaptic membrane
B) Synaptic cleft
C) Synaptic vesicle
D) Voltage-gated Ca2+ channel
E) Presynaptic terminal

Accepted Answer

Question 18

Continuous conduction of action potentials means that

Accepted Answer

A)   once an action potential is created, it moves in both directions along the axon.
B)   the whole axon depolarizes at the same time.
C)   an action potential in one site generates local currents causing depolarization to threshold at the adjacent site.
D)   an action potential is conducted from one node of Ranvier to the next node.

Question 19

A series of local potentials causes the membrane potential to move to -80 mV. Predict the result.

Accepted Answer

A)   Threshold is reached.
B)   Depolarization occurs.
C)   The neuron is hyperpolarized.
D)   Information of frequency is needed to predict the result.
E)   The neuron releases neurotransmitter in response.

Question 20

Gray matter consists of bundles of myelinated axons.

Accepted Answer

A) True 
 B)False

Exam 11: Functional Organization of Nervous Tissue

Which of the following statements concerning myelination is true?

Correct Answer
verified

The peripheral nervous system includes the ________.

Correct Answer
verified

Suppose both excitatory and inhibitory neurons synapse with a single postsynaptic neuron. What determines if an action potential is initiated in the postsynaptic neuron?

Correct Answer
verified

-The figure illustrates changes in the membrane potential during an action potential. What does "D" represent? A) Repolarization B) Depolarization C) Local potential D) Threshold E) Afterpotential

Correct Answer
verified

-The figure is a process figure of the chemical synapse. What does "D" represent? A) Postsynaptic membrane B) Synaptic cleft C) Synaptic vesicle D) Voltage-gated Ca²⁺ channel E) Presynaptic terminal

Correct Answer
verified

-The figure illustrates changes in the membrane potential during an action potential. What does "A" represent? A) Repolarization B) Depolarization C) Local potential D) Threshold E) Afterpotential

Correct Answer
verified

Neurotransmitters are released from the ________.

Correct Answer
verified

Cerebrospinal fluid is produced by ________ cells.

Correct Answer
verified

Which of the following is responsible for problem-solving skills?

Correct Answer
verified

Any two EPSPs will override one IPSP.

Correct Answer
verified

A series of local potentials causes the membrane potential to move to -80 mV. Predict the result.

Correct Answer
verified

Dendrites

Correct Answer
verified

A neuron within the central nervous system that carries action potentials from one neuron to another is called a/an ________.

Correct Answer
verified

A local potential

Correct Answer
verified

Continuous conduction of action potentials means that

Correct Answer
verified

Correct Answer
verified

For the resting membrane potential, increasing the Na⁺ concentration in the ECF results in

Correct Answer
verified

During depolarization of the plasma membrane,

Correct Answer
verified

Gray matter consists of bundles of myelinated axons.

Correct Answer
verified

Which of the following statements accurately describe events that occur as a result of a local potential reaching threshold?

Correct Answer
verified

Exam 11: Functional Organization of Nervous Tissue

Which of the following statements concerning myelination is true?

Correct AnswerverifiedShow Answer

The peripheral nervous system includes the ________.

Correct AnswerverifiedShow Answer

Suppose both excitatory and inhibitory neurons synapse with a single postsynaptic neuron. What determines if an action potential is initiated in the postsynaptic neuron?

Correct AnswerverifiedShow Answer

-The figure illustrates changes in the membrane potential during an action potential. What does "D" represent? A) Repolarization B) Depolarization C) Local potential D) Threshold E) Afterpotential

Correct AnswerverifiedShow Answer

-The figure is a process figure of the chemical synapse. What does "D" represent? A) Postsynaptic membrane B) Synaptic cleft C) Synaptic vesicle D) Voltage-gated Ca2+ channel E) Presynaptic terminal

Correct AnswerverifiedShow Answer

-The figure illustrates changes in the membrane potential during an action potential. What does "A" represent? A) Repolarization B) Depolarization C) Local potential D) Threshold E) Afterpotential

Correct AnswerverifiedShow Answer

Neurotransmitters are released from the ________.

Correct AnswerverifiedShow Answer

Cerebrospinal fluid is produced by ________ cells.

Correct AnswerverifiedShow Answer

Which of the following is responsible for problem-solving skills?

Correct AnswerverifiedShow Answer

Any two EPSPs will override one IPSP.

Correct AnswerverifiedShow Answer

A series of local potentials causes the membrane potential to move to -80 mV. Predict the result.

Correct AnswerverifiedShow Answer

Dendrites

Correct AnswerverifiedShow Answer

A neuron within the central nervous system that carries action potentials from one neuron to another is called a/an ________.

Correct AnswerverifiedShow Answer

A local potential

Correct AnswerverifiedShow Answer

Continuous conduction of action potentials means that

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

For the resting membrane potential, increasing the Na+ concentration in the ECF results in

Correct AnswerverifiedShow Answer

During depolarization of the plasma membrane,

Correct AnswerverifiedShow Answer

Gray matter consists of bundles of myelinated axons.

Correct AnswerverifiedShow Answer

Which of the following statements accurately describe events that occur as a result of a local potential reaching threshold?

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
verified

-The figure is a process figure of the chemical synapse. What does "D" represent? A) Postsynaptic membrane B) Synaptic cleft C) Synaptic vesicle D) Voltage-gated Ca²⁺ channel E) Presynaptic terminal

Correct Answer
verified

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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Correct Answer
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Correct Answer
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Correct Answer
verified

For the resting membrane potential, increasing the Na⁺ concentration in the ECF results in

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified