Question 1

A neuron in the skin detects tissue damage in the skin during a burn and informs the brain and spinal cord. This neuron is part of the ________ pathway.

Accepted Answer

The answer of A neuron in the skin detects tissue...

Question 2

The types of neurons that are organized into neuronal pools are

Accepted Answer

A)  interneurons.
B)  intraneurons.
C)  Schwann cells.
D)  astrocytes.E) C) and D)
F) A) and D)

Question 3

Diverging axons amplify an impulse by

Accepted Answer

A)  contacting many neurons.
B)  returning the impulse to the neuron of origin.
C)  splitting into multiple axons.
D)  stimulating themselves.E) B) and C)
F) B) and D)

Question 4

A motor neuron in the arm has an axon that branches to innervate several muscle groups and cause them to contract all at once. This branching is an example of ________.

Accepted Answer

The answer of A motor neuron in the arm has...

Question 5

When an action potential passes over the surface of a synaptic knob, the contents of the vesicles are released in response to the presence of

Accepted Answer

A)  calcium ions.
B)  sodium ions.
C)  neurotransmitters.
D)  neuropeptides.E) B) and C)
F) A) and D)

Question 6

A series of similar stimuli that induces change in local membrane potential is called ________.

Accepted Answer

The answer of A series of similar stimuli that induces...

Question 7

A nerve cell membrane becomes depolarized as a result of

Accepted Answer

A)  Ca⁺² leaving the nerve cell.
B)  Na⁺ ion channels being opened and Na⁺ ions diffusing into the cell.
C)  the relative ease with which K⁺ diffuses into the nerve cell.
D)  Na⁺ being prevented from passing through the membrane.E) A) and B)
F) A) and C)

Question 8

Marjorie takes an anti-anxiety drug so that she can sleep better and remain calm enough to study effectively. She begins by taking 25 milligrams every evening, but within a month this dose is no longer helping, so she takes two pills. After another month this dosage is no longer effective. This is happening because

Accepted Answer

A)  her immune system is rejecting the drug.
B)  she has developed tolerance, which means that her liver can no longer metabolize the drug, so it remains active for too long.
C)  the number of receptors to which the drug binds on neurons has declined.
D)  the number of receptors to which the drug binds on neurons has increased.E) B) and C)
F) B) and D)

Question 9

A neuron is stimulated, which changes membrane potential to the point where voltage-gated Na⁺ channels open and begin depolarizing the cell. The neuron has reached

Accepted Answer

A)  recruitment.
B)  threshold.
C)  summation.
D)  tetanus.E) C) and D)
F) None of the above

Question 10

Presynaptic neurons release neurotransmitters by ________.

Accepted Answer

A)  endocytosis
B)  exocytosis
C)  diffusion
D)  active transportE) A) and D)
F) A) and C)

Question 11

Sensory receptors

Accepted Answer

A)  send signals from the brain to muscles.
B)  work with muscles to generate motion.
C)  detect changes in and outside the body.
D)  act as an intermediate within the CNS between the ascending and descending tracts.E) B) and C)
F) C) and D)

Question 12

A neuron may have

Accepted Answer

A)  one axon and many dendrites.
B)  one dendrite and many axons.
C)  no dendrites.
D)  no axons.E) A) and D)
F) None of the above

Question 13

Which cells produce myelin in the brain and spinal cord?

Accepted Answer

A)  Schwann cells
B)  Astrocytes
C)  Microglia
D)  OligodendrocytesE) B) and C)
F) A) and B)

Question 14

Axon branches are called collaterals.

Accepted Answer

A) True 
 B)False

Question 15

Interneurons are specialized to carry impulses from receptor cells into the brain or spinal cord.

Accepted Answer

A) True 
 B)False

Question 16

In reuptake

Accepted Answer

A)  an action potential reverses direction.
B)  a neuropeptide breaks down into amino acids, which act as neurotransmitters.
C)  a neurotransmitter that has already been released into the synaptic cleft is taken back into the synaptic knob of the presynaptic neuron.
D)  an enzyme breaks down a neurotransmitter and then another enzyme builds it back up.E) B) and C)
F) A) and B)

Question 17

Which of the following cells is found only in the PNS?

Accepted Answer

A)  Oligodendrocyte
B)  Astrocyte
C)  Microglial cell
D)  Schwann cellE) B) and D)
F) All of the above

Question 18

Organize the following list of bodily functions and actions according to whether they are controlled by the somatic nervous system or autonomic nervous system: heart rate, walking, looking to the left, digestion, vasoconstriction, biceps femoris contraction.

Accepted Answer

A)  Somatic heart rate, looking to the left, digestion; Autonomic biceps femoris contraction, walking, vasoconstriction
B)  Somatic walking, looking to the left, biceps femoris contraction; Autonomic heart rate, digestion, vasoconstriction
C)  Somatic heart rate, digestion, vasoconstriction; Autonomic walking, looking to the left, biceps femoris contraction
D)  Somatic walking, heart rate, vasoconstriction; Autonomic looking to the left, biceps femoris contraction, digestionE) None of the above
F) All of the above

Question 19

If a neurotransmitter hyperpolarizes a cell membrane and an action potential is less likely, the change is called ________ potential.

Accepted Answer

inhibitory...

Question 20

The somatic nervous system controls voluntary actions and the autonomic nervous system oversees involuntary actions.

Accepted Answer

A) True 
 B)False

Exam 10: Nervous System I: Basic Structure and Function

Which of the following cells is found only in the PNS?

Correct Answer
verified

If a neurotransmitter hyperpolarizes a cell membrane and an action potential is less likely, the change is called ________ potential.

Correct Answer
verified
inhibitory...
View Answer

A nerve cell membrane becomes depolarized as a result of

Correct Answer
verified

A series of similar stimuli that induces change in local membrane potential is called ________.

Correct Answer
verified

Interneurons are specialized to carry impulses from receptor cells into the brain or spinal cord.

Correct Answer
verified

Organize the following list of bodily functions and actions according to whether they are controlled by the somatic nervous system or autonomic nervous system: heart rate, walking, looking to the left, digestion, vasoconstriction, biceps femoris contraction.

Correct Answer
verified

In reuptake

Correct Answer
verified

A neuron is stimulated, which changes membrane potential to the point where voltage-gated Na⁺ channels open and begin depolarizing the cell. The neuron has reached

Correct Answer
verified

Correct Answer
verified

When an action potential passes over the surface of a synaptic knob, the contents of the vesicles are released in response to the presence of

Correct Answer
verified

The somatic nervous system controls voluntary actions and the autonomic nervous system oversees involuntary actions.

Correct Answer
verified

A motor neuron in the arm has an axon that branches to innervate several muscle groups and cause them to contract all at once. This branching is an example of ________.

Correct Answer
verified

Presynaptic neurons release neurotransmitters by ________.

Correct Answer
verified

A neuron in the skin detects tissue damage in the skin during a burn and informs the brain and spinal cord. This neuron is part of the ________ pathway.

Correct Answer
verified

Diverging axons amplify an impulse by

Correct Answer
verified

A neuron may have

Correct Answer
verified

Axon branches are called collaterals.

Correct Answer
verified

Which cells produce myelin in the brain and spinal cord?

Correct Answer
verified

The types of neurons that are organized into neuronal pools are

Correct Answer
verified

Sensory receptors

Correct Answer
verified

Exam 10: Nervous System I: Basic Structure and Function

Which of the following cells is found only in the PNS?

Correct AnswerverifiedShow Answer

If a neurotransmitter hyperpolarizes a cell membrane and an action potential is less likely, the change is called ________ potential.

Correct Answerverifiedinhibitory...View AnswerShow Answer

A nerve cell membrane becomes depolarized as a result of

Correct AnswerverifiedShow Answer

A series of similar stimuli that induces change in local membrane potential is called ________.

Correct AnswerverifiedShow Answer

Interneurons are specialized to carry impulses from receptor cells into the brain or spinal cord.

Correct AnswerverifiedShow Answer

Organize the following list of bodily functions and actions according to whether they are controlled by the somatic nervous system or autonomic nervous system: heart rate, walking, looking to the left, digestion, vasoconstriction, biceps femoris contraction.

Correct AnswerverifiedShow Answer

In reuptake

Correct AnswerverifiedShow Answer

A neuron is stimulated, which changes membrane potential to the point where voltage-gated Na⁺ channels open and begin depolarizing the cell. The neuron has reached

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

When an action potential passes over the surface of a synaptic knob, the contents of the vesicles are released in response to the presence of

Correct AnswerverifiedShow Answer

The somatic nervous system controls voluntary actions and the autonomic nervous system oversees involuntary actions.

Correct AnswerverifiedShow Answer

A motor neuron in the arm has an axon that branches to innervate several muscle groups and cause them to contract all at once. This branching is an example of ________.

Correct AnswerverifiedShow Answer

Presynaptic neurons release neurotransmitters by ________.

Correct AnswerverifiedShow Answer

A neuron in the skin detects tissue damage in the skin during a burn and informs the brain and spinal cord. This neuron is part of the ________ pathway.

Correct AnswerverifiedShow Answer

Diverging axons amplify an impulse by

Correct AnswerverifiedShow Answer

A neuron may have

Correct AnswerverifiedShow Answer

Axon branches are called collaterals.

Correct AnswerverifiedShow Answer

Which cells produce myelin in the brain and spinal cord?

Correct AnswerverifiedShow Answer

The types of neurons that are organized into neuronal pools are

Correct AnswerverifiedShow Answer

Sensory receptors

Correct AnswerverifiedShow Answer

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verified

Correct Answer
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inhibitory...
View Answer

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