Question 1

Masses of myelinated nerve fibers appear

Accepted Answer

A)   white.
B)   gray.
C)   brown.
D)   transparent.E) B) and D)
F) A) and B)

Question 2

In order for a severed peripheral nerve to regenerate and recover its original function, nerve fibers must sprout and enter tubes formed by

Accepted Answer

A)   basement membranes and connective tissues.
B)   former axons.
C)   myelin.
D)   nodes of Ranvier.E) None of the above
F) A) and B)

Question 3

Neurotransmitters that are modified amino acids are

Accepted Answer

A)   dopamine, serotonin, epinephrine, and norepinephrine.
B)   enkephalins, endorphins, and substance P.
C)   aspartic acid, glutamic acid, glycine, and GABA.
D)   potassium, sodium, and calcium ionsE) None of the above
F) All of the above

Question 4

Transmitting an impulse from one neuron to another involves a(n)

Accepted Answer

A)   impulse stimulating presynaptic dendrites to release a neurotransmitter into a synaptic cleft.
B)   impulse stimulating a presynaptic axon to release a neurotransmitter into a synaptic cleft.
C)   neurotransmitter traveling from presynaptic dendrites across a synapse to postsynaptic axons or a cell body.
D)   neurotransmitter traveling from postsynaptic axons across a synapse to presynaptic dendrites or a cell body.E) A) and B)
F) A) and C)

Question 5

Which of the following is unique to neurons?

Accepted Answer

A)   Golgi apparatus
B)   Chromatophilic substance
C)   Mitochondrion
D)   LysosomeE) A) and B)
F) A) and C)

Question 6

Enkephalins are neuropeptides.

Accepted Answer

A) True 
 B)False

Question 7

The cells in the nervous system that fill spaces and support neurons both physically and nutritionally are called ______.

Accepted Answer

The answer of The cells in the nervous system that...

Question 8

Neuropeptides that affect a neuron's response to other neurotransmitters are called _______.

Accepted Answer

The answer of Neuropeptides that affect a neuron's response to...

Question 9

Drugs that inhibit the enzyme monoamine oxidase

Accepted Answer

A)   allow increased activity of norepinephrine.
B)   decompose norepinephrine.
C)   decrease the activity of serotonin.
D)   decompose serotonin.E) A) and B)
F) B) and C)

Question 10

Myelin is composed largely of carbohydrates.

Accepted Answer

A) True 
 B)False

Question 11

Saltatory conduction

Accepted Answer

A)   occurs only if the myelin sheath is continuous.
B)   occurs only if nodes of Ranvier are lacking.
C)   is faster than conduction on an unmyelinated fiber.
D)   is slower than conduction on an unmyelinated fiber.E) C) and D)
F) A) and C)

Question 12

Sensory receptors

Accepted Answer

A)   monitor light
B)   monitor sound.
C)   detect changes in and outside the body.
D)   all of the above.E) A) and B)
F) A) and C)

Question 13

Which of the following ions cross neuron cell membranes most readily?

Accepted Answer

A)   Potassium
B)   Sodium
C)   Calcium
D)   MagnesiumE) None of the above
F) B) and D)

Question 14

The difference in electrical charge between the inside and outside of a polarized neuron cell membrane is called the ______ ______.

Accepted Answer

The answer of The difference in electrical charge between the...

Question 15

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

Accepted Answer

A)   Oligodendrocyte
B)   Astrocyte
C)   Microglial cell
D)   Schwann cellE) C) and D)
F) B) and D)

Question 16

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

Accepted Answer

A) True 
 B)False

Question 17

The functional connection between two neurons is a

Accepted Answer

A)   dendrite.
B)   gap junction.
C)   synapse.
D)   neurotransmitter.E) A) and B)
F) All of the above

Question 18

Presynaptic neurons release neurotransmitters by ______________.

Accepted Answer

A)   endocytosis.
B)   exocytosis.
C)   diffusion.
D)   active transport.E) B) and C)
F) C) and D)

Question 19

The space between neurons is called the neuronal space.

Accepted Answer

A) True 
 B)False

Question 20

The neurotransmitter most likely produced when a person uses a drug that creates a sense of well-being is

Accepted Answer

A)   glutamic acid.
B)   dopamine.
C)   enkephalin.
D)   substance Q.E) B) and C)
F) A) and D)

Exam 10: Nervous System I: Basic Structure and Function

Enkephalins are neuropeptides.

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Saltatory conduction

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Neuropeptides that affect a neuron's response to other neurotransmitters are called _______.

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Which of the following ions cross neuron cell membranes most readily?

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Sensory receptors

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Myelin is composed largely of carbohydrates.

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

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Which of the following is unique to neurons?

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Neurotransmitters that are modified amino acids are

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In order for a severed peripheral nerve to regenerate and recover its original function, nerve fibers must sprout and enter tubes formed by

Correct AnswerverifiedShow Answer

The cells in the nervous system that fill spaces and support neurons both physically and nutritionally are called ______.

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Drugs that inhibit the enzyme monoamine oxidase

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The neurotransmitter most likely produced when a person uses a drug that creates a sense of well-being is

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Masses of myelinated nerve fibers appear

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Transmitting an impulse from one neuron to another involves a(n)

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The difference in electrical charge between the inside and outside of a polarized neuron cell membrane is called the ______ ______.

Correct AnswerverifiedShow Answer

The functional connection between two neurons is a

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Presynaptic neurons release neurotransmitters by ______________.

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The space between neurons is called the neuronal space.

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

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

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