Question 1

What receives excitation from other neurons and conducts impulses to muscle or gland cells?

Accepted Answer

A)   sensory neurons
B)   motor neurons
C)   dendrites
D)   dendritic spinesE) B) and D)
F) A) and D)

Question 2

Most chemicals can easily cross the cell membrane of a neuron.

Accepted Answer

A) True 
 B)False

Question 3

Briefly describe the function of voltage-gated channels.

Accepted Answer

Voltage-gated channels are specialized p...

Question 4

Neurons typically have one ____, but many ____.

Accepted Answer

A)   dendrite; axons
B)   axon; dendrites
C)   cell body; axons
D)   dendrite; cell bodiesE) None of the above
F) B) and D)

Question 5

The structure that contains the chromosomes is called the:

Accepted Answer

A)   endoplasmic reticulum.
B)   nucleus.
C)   mitochondrion.
D)   ribosome.E) A) and B)
F) A) and C)

Question 6

A drug that blocks the sodium gates of a neuron's membrane would:

Accepted Answer

A)   decrease the threshold.
B)   block the action potential.
C)   cause repeated action potentials.
D)   eliminate the refractory period.E) B) and D)
F) C) and D)

Question 7

During the relative refractory period:

Accepted Answer

A)   the sodium gates are firmly closed.
B)   the sodium gates are reverting to their usual state.
C)   the sodium gates are wide open.
D)   the potassium gates are firmly closed.E) B) and C)
F) A) and C)

Question 8

To what does saltatory conduction refer?

Accepted Answer

A)   the production of an action potential by the movement of sodium ions
B)   the transmission of an impulse along a myelinated axon
C)   the transmission of impulses along dendrites
D)   the transmission of an impulse between one neuron and anotherE) B) and D)
F) A) and C)

Question 9

Neurons receive information and transmit it to other cells.

Accepted Answer

A) True 
 B)False

Question 10

Glucose enters the brain via which type of transport?

Accepted Answer

A)   indirect transport
B)   direct transport
C)   passive transport
D)   active transportE) B) and C)
F) A) and B)

Question 11

During the entire course of events from the start of an action potential until the membrane returns to its resting potential, what is the net movement of ions?

Accepted Answer

A)   sodium in, potassium in
B)   sodium out, potassium out
C)   sodium in, potassium out
D)   sodium out, potassium inE) All of the above
F) A) and B)

Question 12

Which of the following is a characteristic of glial cells in the human brain?

Accepted Answer

A)   They are larger than neurons.
B)   They are capable of transmitting impulses when neurons fail to do so.
C)   They are more numerous than neurons.
D)   They are like neurons, except that they lack axons.E) C) and D)
F) A) and D)

Question 13

A drug would prevent an action potential if it:

Accepted Answer

A)   lowers the threshold of the membrane.
B)   blocks the movement of potassium across the membrane.
C)   blocks the movement of sodium across the membrane.
D)   increases the movement of sodium across the membrane.E) C) and D)
F) A) and D)

Question 14

Where do most action potentials begin?

Accepted Answer

A)   in the dendrites
B)   in the cell body
C)   at the axon hillock
D)   at the tip of the axonE) B) and C)
F) C) and D)

Question 15

As a general rule, where do axons convey information?

Accepted Answer

A)   toward dendrites of their own cell
B)   toward their own cell body
C)   away from their own cell body
D)   to surrounding gliaE) A) and B)
F) All of the above

Question 16

Which of the following contributed most to Cajal's ability to find that neurons are separate from one another?

Accepted Answer

A)   Charles Sherrington's study of reflexes
B)   Camillo Golgi's cell staining method
C)   Perves & Hadley's dye injection method
D)   Galileo's invention of the telescopeE) C) and D)
F) A) and B)

Question 17

The insulating material which covers many vertebrate axons is called the:

Accepted Answer

A)   dendrite.
B)   myelin sheath.
C)   cell body or soma.
D)   presynaptic terminal.E) A) and B)
F) C) and D)

Question 18

The greater the surface area of a dendrite, the more information it can receive from other neurons.

Accepted Answer

A) True 
 B)False

Question 19

The membrane of a neuron is composed of ____ with ____ embedded in them.

Accepted Answer

A)   carbohydrates; purines
B)   fat molecules; proteins
C)   proteins; neurotransmitters
D)   benzene molecules; carbohydratesE) A) and B)
F) All of the above

Question 20

Briefly describe the structure of the blood-brain barrier and why it is important.

Accepted Answer

Tightly joined endothelial cells form th...

Exam 2: Nerve Cells and Nerve Impulses

During the entire course of events from the start of an action potential until the membrane returns to its resting potential, what is the net movement of ions?

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The membrane of a neuron is composed of ____ with ____ embedded in them.

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Which of the following is a characteristic of glial cells in the human brain?

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Neurons receive information and transmit it to other cells.

Correct AnswerverifiedShow Answer

Briefly describe the structure of the blood-brain barrier and why it is important.

Correct AnswerverifiedTightly joined endothelial cells form th...View AnswerShow Answer

Glucose enters the brain via which type of transport?

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A drug that blocks the sodium gates of a neuron's membrane would:

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As a general rule, where do axons convey information?

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A drug would prevent an action potential if it:

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Most chemicals can easily cross the cell membrane of a neuron.

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Briefly describe the function of voltage-gated channels.

Correct AnswerAnswered by ExamLex AIVoltage-gated channels are specialized p...View AnswerShow Answer

Which of the following contributed most to Cajal's ability to find that neurons are separate from one another?

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To what does saltatory conduction refer?

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Where do most action potentials begin?

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The structure that contains the chromosomes is called the:

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During the relative refractory period:

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What receives excitation from other neurons and conducts impulses to muscle or gland cells?

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Neurons typically have one ____, but many ____.

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The insulating material which covers many vertebrate axons is called the:

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The greater the surface area of a dendrite, the more information it can receive from other neurons.

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The membrane of a neuron is composed of with embedded in them.

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Tightly joined endothelial cells form th...
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Voltage-gated channels are specialized p...
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Neurons typically have one , but many .

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