Question 1

Pulling your hand away from a hot pot is an example of what type of reflex?

Accepted Answer

A)   A withdrawal reflex
B)   A stretch reflex
C)   An extensor reflex
D)   A tension reflexE) B) and D)
F) None of the above

Question 2

Neurotransmitters that hyperpolarize post-synaptic membranes are always __________.

Accepted Answer

A)   inhibitory
B)   excitatory
C)   all-or-none
D)   acetylcholineE) A) and C)
F) None of the above

Question 3

Which of the following are adrenergic fibers?

Accepted Answer

A)   Parasympathetic postganglionic fibers
B)   Sympathetic postganglionic fibers
C)   Parasympathetic preganglionic fibers
D)   Sympathetic preganglionic fibers
E)   Motor fibers to skeletal muscleF) B) and D)
G) C) and D)

Question 4

What is the structure called that is a branch-like sensory process of a neuron that provides the main receptive surface for communication?

Accepted Answer

A)   Nissl substance
B)   Axon
C)   Neurilemma
D)   DendriteE) A) and B)
F) A) and C)

Question 5

Which of the following axons would have the slowest conduction speed?

Accepted Answer

A)   Unmyelinated, large-diameter axon
B)   Myelinated, small-diameter axon
C)   Unmyelinated, small-diameter axon
D)   Myelinated, large-diameter axonE) A) and D)
F) A) and C)

Question 6

During an action potential, what occurs that results in repolarization?

Accepted Answer

A)   Potassium ions diffuse to the outside of the cell membrane.
B)   Potassium ions diffuse to the inside of the cell membrane.
C)   Sodium ions diffuse to the outside of the cell membrane.
D)   Sodium ions diffuse to the inside of the cell membrane.E) B) and C)
F) A) and C)

Question 7

The innermost layer of the meninges is the __________ mater.

Accepted Answer

The answer of The innermost layer of the meninges is...

Question 8

What part of a neuron originates as a single structure but may give off many branches?

Accepted Answer

A)   Axon
B)   Dendrite
C)   Myelin sheath
D)   SomaE) None of the above
F) All of the above

Question 9

Neurons that release acetylcholine are __________ neurons; those that secrete norepinephrine are __________ neurons.

Accepted Answer

A)   adrenergic; cholinergic
B)   cholinergic; adrenergic
C)   kinesthetic; nicotinic
D)   adrenergic; muscarinicE) A) and B)
F) B) and C)

Question 10

Cell bodies of motor neurons are located in the anterior horns of the spinal cord.

Accepted Answer

A) True 
 B)False

Question 11

What is the function of the basal nuclei?

Accepted Answer

A)   Facilitate voluntary movement
B)   Inhibit sensory awareness
C)   Stimulate pattern recognition
D)   Interpret speech and other auditory inputE) A) and B)
F) None of the above

Question 12

Impulse conduction is __________ in myelinated nerve fibers.

Accepted Answer

A)   faster
B)   slowerC) A) and B)
D) undefined

Question 13

Masses of myelinated nerve fibers appear as what color in the central nervous system?

Accepted Answer

A)   White
B)   Gray
C)   Brown
D)   Transparent
E)   RedF) B) and D)
G) C) and D)

Question 14

What are the gaps in the myelin sheath called?

Accepted Answer

A)   Gap junctions
B)   Neurofibrils
C)   Nodes of Ranvier
D)   SynapsesE) None of the above
F) B) and C)

Question 15

An action potential is an all-or-none response.

Accepted Answer

A) True 
 B)False

Question 16

If a patient was unable to feel the right side of the face, what cranial nerve might be damaged?

Accepted Answer

A)   Trigeminal nerve (CN V) 
B)   Facial nerve (CN VII) 
C)   Hypoglossal nerve (CN XII) 
D)   Glossopharyngeal nerve (CN IX) E) A) and B)
F) A) and C)

Question 17

What structural type of neuron has a single process that extends from the cell body?

Accepted Answer

A)   Unipolar neurons
B)   Bipolar neurons
C)   Multipolar neuronsD) A) and B)
E) A) and C)

Question 18

Sympathetic tone is defined as ongoing stimulation of smooth muscles in the walls of blood vessels, which results in partial constriction.

Accepted Answer

A) True 
 B)False

Question 19

What are the two major cell types found in nervous tissue?

Accepted Answer

A)   Neurons and neuroglia
B)   Dendrites and axons
C)   Neurons and effectors
D)   Astrocytes and Schwann cells
E)   Neurons and nervesF) A) and B)
G) All of the above

Question 20

What is the correct sequence of the parts of a reflex arc?

Accepted Answer

A)   Receptor, motor neuron, sensory neuron, interneuron, effector
B)   Effector, receptor, sensory neuron, interneuron, motor neuron
C)   Effector, sensory neuron, receptor, motor neuron, interneuron
D)   Receptor, sensory neuron, interneuron, motor neuron, effector
E)   Receptor, interneuron, effector, sensory neuron, motor neuronF) C) and E)
G) A) and B)

Exam 9: Nervous System

If a patient was unable to feel the right side of the face, what cranial nerve might be damaged?

Correct AnswerverifiedShow Answer

During an action potential, what occurs that results in repolarization?

Correct AnswerverifiedShow Answer

The innermost layer of the meninges is the __________ mater.

Correct AnswerverifiedShow Answer

Pulling your hand away from a hot pot is an example of what type of reflex?

Correct AnswerverifiedShow Answer

Sympathetic tone is defined as ongoing stimulation of smooth muscles in the walls of blood vessels, which results in partial constriction.

Correct AnswerverifiedShow Answer

Masses of myelinated nerve fibers appear as what color in the central nervous system?

Correct AnswerverifiedShow Answer

Cell bodies of motor neurons are located in the anterior horns of the spinal cord.

Correct AnswerverifiedShow Answer

Neurotransmitters that hyperpolarize post-synaptic membranes are always __________.

Correct AnswerverifiedShow Answer

Which of the following are adrenergic fibers?

Correct AnswerverifiedShow Answer

What is the structure called that is a branch-like sensory process of a neuron that provides the main receptive surface for communication?

Correct AnswerverifiedShow Answer

Which of the following axons would have the slowest conduction speed?

Correct AnswerverifiedShow Answer

What structural type of neuron has a single process that extends from the cell body?

Correct AnswerverifiedShow Answer

What are the gaps in the myelin sheath called?

Correct AnswerverifiedShow Answer

Impulse conduction is __________ in myelinated nerve fibers.

Correct AnswerverifiedShow Answer

What are the two major cell types found in nervous tissue?

Correct AnswerverifiedShow Answer

What part of a neuron originates as a single structure but may give off many branches?

Correct AnswerverifiedShow Answer

An action potential is an all-or-none response.

Correct AnswerverifiedShow Answer

What is the function of the basal nuclei?

Correct AnswerverifiedShow Answer

Neurons that release acetylcholine are __________ neurons; those that secrete norepinephrine are __________ neurons.

Correct AnswerverifiedShow Answer

What is the correct sequence of the parts of a reflex arc?

Correct AnswerverifiedShow Answer

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Neurons that release acetylcholine are neurons; those that secrete norepinephrine are neurons.

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