Question 1

When the neuronal membrane is at rest, the potassium channels ____.

Accepted Answer

A)   permit potassium ions to pass quickly and easily
B)   permit potassium ions to pass slowly
C)   prohibit any movement of potassium ions
D)   help to open up the sodium channelsE) All of the above
F) A) and D)

Question 2

Professor Durrant explained to his students that the resting potential of a neuron is the ______.

Accepted Answer

A)   total amount of positive charge inside the neuron relative to the outside
B)   total amount of negative charge inside the neuron relative to the outside
C)   total amount of sodium ions compared to potassium ions
D)   the amount of positive charge in the dendrites compared to the axonE) A) and C)
F) B) and C)

Question 3

Which type of glia release chemicals that modify the activity of neighboring neurons?

Accepted Answer

A)   Astrocytes
B)   Schwann cells
C)   Oligodendrocytes
D)   Radial gliaE) B) and C)
F) A) and B)

Question 4

Why does the brain need thiamine?

Accepted Answer

A)   To enable glucose to cross the blood-brain barrier
B)   As a source of fuel in case there is not enough glucose
C)   As a building block for making proteins
D)   To enable it to metabolize glucoseE) None of the above
F) B) and C)

Question 5

When a neuron is at rest, what is primarily responsible for moving potassium ions into the cell?

Accepted Answer

A)   Concentration gradient
B)   An electrical gradient
C)   The sodium-potassium pump
D)   Both the sodium-potassium pump and electrical gradientE) A) and D)
F) A) and C)

Question 6

Glial cells transmit information across long distances.

Accepted Answer

A) True 
 B)False

Question 7

Ordinarily, stimulation of a neuron takes place ____.

Accepted Answer

A)   through hyperpolarization
B)   at the synapse
C)   in the mitochondria
D)   in the endoplasmic reticulumE) A) and C)
F) None of the above

Question 8

Dr. Pautz studies the immune system and has recently become interested in the glial cells that function similar to other cells in the immune system. What cells has Dr. Pautz started exploring?

Accepted Answer

A)   Schwann cells
B)   Microglia
C)   Astrocytes
D)   Radial gliaE) None of the above
F) A) and B)

Question 9

The net effect of each cycle of the sodium-potassium pump is to ____.

Accepted Answer

A)   decrease the number of positively charged ions within the cell
B)   increase the number of positively charged ions within the cell
C)   decrease the number of positively charged ions outside the cell
D)   increase the number of negatively charged ions within the cellE) None of the above
F) B) and C)

Question 10

Using motor and sensory neurons as examples, explain the difference between afferent and efferent.

Accepted Answer

An afferent axon brings information into...

Question 11

Mr. Doyal has been diagnosed with Parkinson's disease (which is the result of damaged dopamine signaling). Instead of giving him dopamine, his doctors have given him a derivative of dopamine called L-DOPA to take. Given what you know about substances entering the nervous system, why do you think Mr. Doyal was given L-DOPA instead of dopamine?

Accepted Answer

Mr. Doyal was likely given L-DOPA instea...

Question 12

Neurons typically have one ____, but many ____.

Accepted Answer

A)   dendrite; axons
B)   axon; dendrites
C)   cell body; axons
D)   dendrite; cell bodiesE) A) and B)
F) A) and D)

Question 13

What do neurons have that other cells do not?

Accepted Answer

A)   A plasma membrane
B)   Large, branching extensions
C)   Protein channels
D)   An endoplasmic reticulumE) None of the above
F) B) and C)

Question 14

A drug that blocks the sodium gates of a neuron's membrane will ____.

Accepted Answer

A)   decrease the threshold
B)   block the action potential
C)   cause repeated action potentials
D)   eliminate the refractory periodE) A) and D)
F) None of the above

Question 15

What is the main source of nutrition for vertebrate neurons?

Accepted Answer

A)   Fats
B)   Glucose
C)   Sodium
D)   Complex carbohydratesE) B) and C)
F) C) and D)

Question 16

The structure that contains a cell's chromosomes is called the ____.

Accepted Answer

A)   endoplasmic reticulum
B)   nucleus
C)   mitochondrion
D)   ribosomeE) C) and D)
F) B) and D)

Question 17

What occurs when a stimulus shifts the potential inside a neuron from the resting potential to a more negative potential?

Accepted Answer

A)   Hyperpolarization
B)   Depolarization
C)   An action potential
D)   A thresholdE) None of the above
F) B) and C)

Question 18

What will most affect the speed of an action potential?

Accepted Answer

A)   The strength of the stimulus
B)   The time since the last action potential
C)   The length of the axon
D)   The resistance of the membraneE) A) and B)
F) B) and C)

Question 19

An axon has many branches, each of which swells at its tip. These are known as ____.

Accepted Answer

A)   presynaptic terminals
B)   efferent axons
C)   afferent axons
D)   intrinsic neuronsE) A) and D)
F) A) and B)

Question 20

Both ____ and ____ shared the Nobel Prize for Physiology or Medicine in 1906.

Accepted Answer

A)   Golgi and Cajal
B)   Cajal and Sherrington
C)   Sherrington and Golgi
D)   Cajal and KalatE) A) and B)
F) A) and C)

Exam 1: Nerve Cells and Nerve Impulses

Which type of glia release chemicals that modify the activity of neighboring neurons?

Correct Answer
verified

A drug that blocks the sodium gates of a neuron's membrane will ____.

Correct Answer
verified

The structure that contains a cell's chromosomes is called the ____.

Correct Answer
verified

Correct Answer
verified
Mr. Doyal was likely given L-DOPA instea...
View Answer

What do neurons have that other cells do not?

Correct Answer
verified

What will most affect the speed of an action potential?

Correct Answer
verified

Glial cells transmit information across long distances.

Correct Answer
verified

What is the main source of nutrition for vertebrate neurons?

Correct Answer
verified

Dr. Pautz studies the immune system and has recently become interested in the glial cells that function similar to other cells in the immune system. What cells has Dr. Pautz started exploring?

Correct Answer
verified

The net effect of each cycle of the sodium-potassium pump is to ____.

Correct Answer
verified

What occurs when a stimulus shifts the potential inside a neuron from the resting potential to a more negative potential?

Correct Answer
verified

Using motor and sensory neurons as examples, explain the difference between afferent and efferent.

Correct Answer
verified
An afferent axon brings information into...
View Answer

Ordinarily, stimulation of a neuron takes place ____.

Correct Answer
verified

Why does the brain need thiamine?

Correct Answer
verified

An axon has many branches, each of which swells at its tip. These are known as ____.

Correct Answer
verified

Neurons typically have one , but many .

Correct Answer
verified

When a neuron is at rest, what is primarily responsible for moving potassium ions into the cell?

Correct Answer
verified

When the neuronal membrane is at rest, the potassium channels ____.

Correct Answer
verified

Professor Durrant explained to his students that the resting potential of a neuron is the ______.

Correct Answer
verified

Both and shared the Nobel Prize for Physiology or Medicine in 1906.

Correct Answer
verified

Exam 1: Nerve Cells and Nerve Impulses

Which type of glia release chemicals that modify the activity of neighboring neurons?

Correct AnswerverifiedShow Answer

A drug that blocks the sodium gates of a neuron's membrane will ____.

Correct AnswerverifiedShow Answer

The structure that contains a cell's chromosomes is called the ____.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedMr. Doyal was likely given L-DOPA instea...View AnswerShow Answer

What do neurons have that other cells do not?

Correct AnswerverifiedShow Answer

What will most affect the speed of an action potential?

Correct AnswerverifiedShow Answer

Glial cells transmit information across long distances.

Correct AnswerverifiedShow Answer

What is the main source of nutrition for vertebrate neurons?

Correct AnswerverifiedShow Answer

Dr. Pautz studies the immune system and has recently become interested in the glial cells that function similar to other cells in the immune system. What cells has Dr. Pautz started exploring?

Correct AnswerverifiedShow Answer

The net effect of each cycle of the sodium-potassium pump is to ____.

Correct AnswerverifiedShow Answer

What occurs when a stimulus shifts the potential inside a neuron from the resting potential to a more negative potential?

Correct AnswerverifiedShow Answer

Using motor and sensory neurons as examples, explain the difference between afferent and efferent.

Correct AnswerverifiedAn afferent axon brings information into...View AnswerShow Answer

Ordinarily, stimulation of a neuron takes place ____.

Correct AnswerverifiedShow Answer

Why does the brain need thiamine?

Correct AnswerverifiedShow Answer

An axon has many branches, each of which swells at its tip. These are known as ____.

Correct AnswerverifiedShow Answer

Neurons typically have one ____, but many ____.

Correct AnswerverifiedShow Answer

When a neuron is at rest, what is primarily responsible for moving potassium ions into the cell?

Correct AnswerverifiedShow Answer

When the neuronal membrane is at rest, the potassium channels ____.

Correct AnswerverifiedShow Answer

Professor Durrant explained to his students that the resting potential of a neuron is the ______.

Correct AnswerverifiedShow Answer

Both ____ and ____ shared the Nobel Prize for Physiology or Medicine in 1906.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Mr. Doyal was likely given L-DOPA instea...
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
An afferent axon brings information into...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Neurons typically have one , but many .

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Both and shared the Nobel Prize for Physiology or Medicine in 1906.

Correct Answer
verified