Question 1

In a spinal cord injury,nerve signals cannot proceed past the location of the injury.A person who is quadriplegic can move their head and neck,but not their arms,abdomen,or legs.Which part of their spinal cord was damaged?

Accepted Answer

A)  Thoracic
B)  Lumbar
C)  Cervical
D)  Sacral
E)  CoccyxF) None of the above
G) A) and E)

Question 2

Which of the following neurons would you predict to be sensitive to saxitoxin?

Accepted Answer

A)  All neurons would be sensitive
B)  Sensory neurons
C)  Interneurons
D)  Motor neuronsE) A) and C)
F) A) and B)

Question 3

Nodes of Ranvier are intervals between Schwann cells that _____ the conduction of nerve impulses.

Accepted Answer

A)  Slow
B)  Have no effect on
C)  Trigger
D)  Speed
E)  Completely blockF) C) and D)
G) D) and E)

Question 4

The type of neuron that connects one neuron to another within the central nervous system is the:

Accepted Answer

A)  Synaptic neuron
B)  Interneuron
C)  Sensory neuron
D)  Motor neuron
E)  Schwann cellF) All of the above
G) None of the above

Question 5

A neural impulse usually begins at the nodes of Ranvier within the axon.

Accepted Answer

A) True 
 B)False

Question 6

The part of the neuron that is usually highly branched and receives input from other neurons is the:

Accepted Answer

A)  Dendrite
B)  Axon
C)  Synapse
D)  Cell body
E)  Node of RanvierF) A) and B)
G) A) and C)

Question 7

Why would this lead to paralysis and death?

Accepted Answer

A)  Neurons run out of energy
B)  Neurons swell because of increased osmosis
C)  Neurons can't recharge
D)  Neurons can't fire without a voltage change
E)  Neurons cannot release neurotransmittersF) A) and C)
G) A) and E)

Question 8

The short intervals between Schwann cells along axons are called:

Accepted Answer

A)  Trigger zones
B)  Axons
C)  Synapses
D)  Dendrites
E)  Nodes of RanvierF) A) and E)
G) B) and C)

Question 9

During an action potential:

Accepted Answer

A)  Sodium ions rush out of the cell switching the potential to +35 millivolts
B)  Sodium ions rush into the cell switching the potential to -70 millivolts
C)  Sodium ions rush into the cell switching the potential to +35 millivolts
D)  Sodium ions rush out of the cell switching the potential to -70 millivoltsE) A) and D)
F) A) and B)

Question 10

Based on the description above,how does Reminyl work?

Accepted Answer

A)  By inhibiting the enzyme acetylcholinesterase
B)  By blocking Na ion facilitated diffusion
C)  By blocking Na ion active transport
D)  By binding to the acetylcholine receptor
E)  By binding to acetylcholineF) A) and B)
G) A) and C)

Question 11

The condition that develops when GABA levels in the brain are deficient is:

Accepted Answer

A)  Epilepsy
B)  Insomnia
C)  Huntington disease
D)  Alzheimer disease
E)  Parkinson diseaseF) A) and B)
G) None of the above

Question 12

If a person with a brain tumor develops impaired vision,which region of the brain was likely to be affected?

Accepted Answer

A)  Frontal lobe
B)  Parietal lobe
C)  Temporal lobe
D)  Occipital lobe
E)  BrainstemF) B) and D)
G) A) and C)

Question 13

Amyotrophic lateral sclerosis,or Lou Gehrig's disease,causes muscle weakness and atrophy due to a decrease in stimulation by which types of neurons?

Accepted Answer

A)  Motor neurons
B)  Sensory neurons
C)  Interneurons
D)  Motor and sensory neurons
E)  Sensory and interneuronsF) A) and C)
G) C) and E)

Question 14

In myelinated axons:

Accepted Answer

A)  Potassium ions can diffuse into the axon only at nodes of Ranvier
B)  Sodium ions can diffuse into the axon only at nodes of Ranvier
C)  Sodium ions can diffuse out of the axon only at nodes of Ranvier
D)  All are correctE) A) and D)
F) C) and D)

Question 15

Only motor neurons reside entirely within the central nervous system.

Accepted Answer

A) True 
 B)False

Question 16

The reason that we can tell light from sound is because different neurons transmit these different stimuli.

Accepted Answer

A) True 
 B)False

Question 17

The type of neuron that brings information toward the central nervous system is the:

Accepted Answer

A)  Synaptic neuron
B)  Interneuron
C)  Motor neuron
D)  Sensory neuron
E)  Schwann cellF) A) and C)
G) C) and D)

Question 18

The type of neuron that conducts its message from the central nervous system toward an effector is the:

Accepted Answer

A)  Synaptic neuron
B)  Interneuron
C)  Motor neuron
D)  Sensory neuron
E)  Schwann cellF) B) and D)
G) C) and E)

Question 19

In a spinal cord injury,nerve signals cannot proceed past the location of the injury.A person who is paraplegic can move their head,arm,neck,and hands,but not their abdomen or legs.Which part of their spinal cord was damaged?

Accepted Answer

A)  Thoracic
B)  Cervical
C)  Lumbar
D)  Sacral
E)  CoccyxF) A) and E)
G) C) and E)

Question 20

An atom or molecule with an electrical charge is:

Accepted Answer

A)  An isomer
B)  An isotope
C)  An ion
D)  A neurotransmitter
E)  An acidF) All of the above
G) A) and D)

Exam 25: The Nervous System

The short intervals between Schwann cells along axons are called:

Correct AnswerverifiedShow Answer

Based on the description above,how does Reminyl work?

Correct AnswerverifiedShow Answer

In a spinal cord injury,nerve signals cannot proceed past the location of the injury.A person who is quadriplegic can move their head and neck,but not their arms,abdomen,or legs.Which part of their spinal cord was damaged?

Correct AnswerverifiedShow Answer

In myelinated axons:

Correct AnswerverifiedShow Answer

Nodes of Ranvier are intervals between Schwann cells that _____ the conduction of nerve impulses.

Correct AnswerverifiedShow Answer

The type of neuron that conducts its message from the central nervous system toward an effector is the:

Correct AnswerverifiedShow Answer

In a spinal cord injury,nerve signals cannot proceed past the location of the injury.A person who is paraplegic can move their head,arm,neck,and hands,but not their abdomen or legs.Which part of their spinal cord was damaged?

Correct AnswerverifiedShow Answer

During an action potential:

Correct AnswerverifiedShow Answer

Why would this lead to paralysis and death?

Correct AnswerverifiedShow Answer

A neural impulse usually begins at the nodes of Ranvier within the axon.

Correct AnswerverifiedShow Answer

Which of the following neurons would you predict to be sensitive to saxitoxin?

Correct AnswerverifiedShow Answer

If a person with a brain tumor develops impaired vision,which region of the brain was likely to be affected?

Correct AnswerverifiedShow Answer

The type of neuron that connects one neuron to another within the central nervous system is the:

Correct AnswerverifiedShow Answer

The part of the neuron that is usually highly branched and receives input from other neurons is the:

Correct AnswerverifiedShow Answer

Only motor neurons reside entirely within the central nervous system.

Correct AnswerverifiedShow Answer

An atom or molecule with an electrical charge is:

Correct AnswerverifiedShow Answer

The type of neuron that brings information toward the central nervous system is the:

Correct AnswerverifiedShow Answer

The reason that we can tell light from sound is because different neurons transmit these different stimuli.

Correct AnswerverifiedShow Answer

The condition that develops when GABA levels in the brain are deficient is:

Correct AnswerverifiedShow Answer

Amyotrophic lateral sclerosis,or Lou Gehrig's disease,causes muscle weakness and atrophy due to a decrease in stimulation by which types of neurons?

Correct AnswerverifiedShow Answer

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