Question 1

Which of the following statements is not true concerning the central nervous system?

Accepted Answer

A)   The central nervous system is made up of the spinal cord and the brain.
B)   The brain and spinal cord contain only white matter--myelinated axons that run together in bundles.
C)   Both the brain and spinal cord are protected by bone.
D)   Both the brain and spinal cord are protected by meninges.
E)   The spaces around the brain and spinal cord are filled with fluid.F) A) and D)
G) B) and C)

Question 2

Which of the following is a neuromodulator?

Accepted Answer

A)   substance P
B)   GABA
C)   acetylcholine
D)   dopamine
E)   serotoninF) None of the above
G) C) and E)

Question 3

Which of the following is not a neurotransmitter?

Accepted Answer

A)   acetylcholine
B)   serotonin
C)   glutamate
D)   GABA
E)   ATPF) A) and B)
G) C) and E)

Question 4

Which of the following statements concerning the primary motor area is not true?

Accepted Answer

A)   The area that controls the thumb, fingers, and hand is larger than the area controlling the leg.
B)   The primary motor area is located anterior to the central sulcus.
C)   Control of muscles responsible for facial movements take up a large portion of the primary motor area.
D)   Voluntary commands to skeletal muscles begin in the primary motor area.
E)   The primary motor area is in the cerebellum.F) B) and E)
G) All of the above E

Question 5

The cerebrum is associated with the

Accepted Answer

A)   two lateral ventricles.
B)   third ventricle.
C)   fourth ventricle.D) A) and B)
E) A) and C)

Question 6

The entire action potential (depolarization and repolarization) occurs in a matter of

Accepted Answer

A)   milliseconds.
B)   seconds.
C)   minutes.D) A) and B)
E) A) and C)

Question 7

Wernicke's area is associated with

Accepted Answer

A)   reflex centers for controlling heartbeat.
B)   sexual arousal.
C)   the ability to ride a bike.
D)   the sense of smell.
E)   the ability to speak.F) A) and B)
G) None of the above

Question 8

Which of the following could happen to the neurotransmitter once it binds to the receiving membrane receptors?

Accepted Answer

A)   reabsorbed by the sending membrane
B)   absorbed by the receiving membrane in order to start the action potential
C)   stays bound to the receiving membrane
D)   released back into the synaptic cleft where it builds upE) All of the above
F) A) and D) A

Question 9

The gap where there is no myelin sheath around a nerve fiber is called a node of Ranvier.

Accepted Answer

A) True 
 B)False

Question 10

The spinal cord extends from the base of the brain through a large opening in the skull called the inferior ventricle.

Accepted Answer

A) True 
 B)False

Question 11

When a neurotransmitter is released into the synaptic cleft,the response of the receiving neuron will be toward excitation.

Accepted Answer

A) True 
 B)False

Question 12

Which conducts an action potential faster and why?

Accepted Answer

A)   myelinated fibers, the action potential moves through the myelin which allows it to travel faster
B)   myelinated fibers, the action potential jumps from one node of Ranvier to another
C)   unmyelinated fibers, the absence of myelin allows the action potential to travel faster
D)   unmyelinated fibers, the action potential jumps from one node of Ranvier to another
E)   unmyelinated fibers, the ions can move in and out of the cell faster without the myelin coatingF) B) and C)
G) C) and D)

Question 13

Which of the following is associated with the PNS but not the CNS?

Accepted Answer

A)   Schwann cells
B)   myelin sheath
C)   axon
D)   dendrite
E)   node of RanvierF) B) and E)
G) All of the above

Question 14

Which of the following statements is not true concerning acetylcholine's function?

Accepted Answer

A)   Acetylcholine has an excitatory effect on smooth muscle and glands.
B)   Acetylcholine is active in both the CNS and PNS.
C)   In the PNS, acetylcholine excites skeletal muscle.
D)   In the PNS, acetylcholine inhibits cardiac muscle.
E)   The enzyme acetylcholinesterase removes acetylcholine from the receiving cell's membrane.F) A) and B)
G) B) and C)

Question 15

Why is the outside of a neuron positively charged?

Accepted Answer

A)   because sodium ions gather around the outside of the cell membrane
B)   because calcium ions gather around the outside of the cell membrane
C)   because potassium ions gather around the inside of the cell membrane
D)   because sodium ions gather around the inside of the cell membrane
E)   because chloride ions gather around the outside of the cell membraneF) C) and D)
G) C) and E)

Question 16

Which of the following is mismatched?

Accepted Answer

A)   sensory nerves--afferent
B)   motor nerves--efferent
C)   somatic motor nerves: smooth muscle, cardiac muscle, glands
D)   somatic sensory nerves--skin, muscles, joints, special senses
E)   visceral sensory nerves--body organsF) None of the above
G) A) and C)

Question 17

Which is the largest part of the brain?

Accepted Answer

A)   medulla oblongata
B)   midbrain
C)   diencephalon
D)   cerebellum
E)   cerebrumF) None of the above
G) C) and E) E

Question 18

What ensures the one-way direction of an action potential?

Accepted Answer

A)   As soon as the action potential has passed by, that portion of the axon undergoes a short refractory period.
B)   Action potentials are self-propagating.
C)   Conduction of an action potential is an all-or-none event.
D)   An action potential at one node causes an action potential at the next node.
E)   An axon can conduct a volley of action potentials very quickly.F) A) and B)
G) C) and E)

Question 19

The action potential in a neuron is an all-or-nothing event.

Accepted Answer

A) True 
 B)False

Question 20

Which of the following is not a function of the nervous system?

Accepted Answer

A)   receive sensory input
B)   cushion and protect soft tissue
C)   perform information processing
D)   perform integration
E)   generate motor outputF) A) and D)
G) All of the above

Exam 13: Nervous System

Which of the following statements is not true concerning the central nervous system?

Correct AnswerverifiedShow Answer

Which of the following is a neuromodulator?

Correct AnswerverifiedShow Answer

Which of the following is not a neurotransmitter?

Correct AnswerverifiedShow Answer

Which of the following statements concerning the primary motor area is not true?

Correct AnswerverifiedE

The cerebrum is associated with the

Correct AnswerverifiedShow Answer

The entire action potential (depolarization and repolarization) occurs in a matter of

Correct AnswerverifiedShow Answer

Wernicke's area is associated with

Correct AnswerverifiedShow Answer

Which of the following could happen to the neurotransmitter once it binds to the receiving membrane receptors?

Correct AnswerverifiedA

The gap where there is no myelin sheath around a nerve fiber is called a node of Ranvier.

Correct AnswerverifiedShow Answer

The spinal cord extends from the base of the brain through a large opening in the skull called the inferior ventricle.

Correct AnswerverifiedShow Answer

When a neurotransmitter is released into the synaptic cleft,the response of the receiving neuron will be toward excitation.

Correct AnswerverifiedShow Answer

Which conducts an action potential faster and why?

Correct AnswerverifiedShow Answer

Which of the following is associated with the PNS but not the CNS?

Correct AnswerverifiedShow Answer

Which of the following statements is not true concerning acetylcholine's function?

Correct AnswerverifiedShow Answer

Why is the outside of a neuron positively charged?

Correct AnswerverifiedShow Answer

Which of the following is mismatched?

Correct AnswerverifiedShow Answer

Which is the largest part of the brain?

Correct AnswerverifiedE

What ensures the one-way direction of an action potential?

Correct AnswerverifiedShow Answer

The action potential in a neuron is an all-or-nothing event.

Correct AnswerverifiedShow Answer

Which of the following is not a function of the nervous system?

Correct AnswerverifiedShow Answer

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E

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A

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E

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