Question 1

The _____ conveys sensory information to the central nervous system and motor commands away from the central nervous system to skeletal muscles.

Accepted Answer

A)   parasympathetic division
B)   autonomic nervous system
C)   somatic system
D)   sympathetic division
E)   brain stemF) All of the above
G) A) and E)

Question 2

Gaps in the myelin sheath are termed

Accepted Answer

A)   nodes of Ranvier.
B)   interaxons.
C)   ganglia.
D)   nuclei.
E)   synapses.F) C) and D)
G) A) and B)

Question 3

Which ion needs to be pumped to the exterior of the axon in order to generate a nerve impulse?

Accepted Answer

A)   Na+
B)   K+
C)   Ca+
D)   H+
E)   Cl-F) A) and D)
G) B) and E)

Question 4

Which of these works by inhibiting dopamine reuptake into synapses?

Accepted Answer

A)   cocaine
B)   THC tetrahydrocannabinol) 
C)   heroin
D)   marijuana
E)   all drugs of abuseF) D) and E)
G) None of the above

Question 5

Which of these structures is the pons?

Accepted Answer

A)   A
B)   B
C)   C
D)   D
E)   EF) None of the above
G) B) and D) E

Question 6

Which of these is mismatched?

Accepted Answer

A)   diencephalon - thalamus
B)   brain stem - medulla oblongata
C)   cerebral cortex - occipital lobe
D)   cerebellum - midbrain
E)   frontal lobe - prefrontal areaF) C) and D)
G) D) and E)

Question 7

Which of these is a second messenger?

Accepted Answer

A)   cAMP
B)   ATP
C)   a peptide hormone
D)   a steroid hormone
E)   DNAF) A) and E)
G) C) and E)

Question 8

Your teenage son comes home late on Friday night and is acting strange. His behavior includes the following characteristics: high agitation, violent behavior, and irritability. These traits are far different from his normal behavior. As a parent you suspect he may have taken a drug. Which drug did he most likely take?

Accepted Answer

A)   cocaine
B)   methamphetamine
C)   marijuana
D)   alcohol
E)   crackF) A) and C)
G) B) and D)

Question 9

The arrow shows the direction of the nerve impulse in a neuron. Where is the neurotransmitter released from the neuron?

Accepted Answer

A)   axon
B)   dendrite
C)   cell body
D)   myelin sheath
E)   axon terminalF) B) and D)
G) B) and C)

Question 10

Weight gain, diabetes mellitus, and a moon-shaped face may indicate

Accepted Answer

A)   Addison disease.
B)   Graves disease.
C)   simple goiter.
D)   pituitary dwarfism.
E)   Cushing syndrome.F) A) and E)
G) A) and C)

Question 11

If you eat a jelly donut, your pancreatic islets will respond by secreting

Accepted Answer

A)   growth hormone.
B)   glucagon.
C)   epinephrine.
D)   insulin.
E)   oxytocin.F) A) and B)
G) A) and E)

Question 12

Long, myelinated nerve fibers are called _____ in the PNS and _____ in the CNS.

Accepted Answer

A)   tracts; nuclei
B)   nerves; ganglia
C)   ganglia; nuclei
D)   nerves; tracts
E)   ganglia; tractsF) None of the above
G) D) and E)

Question 13

Following a severe head injury, a patient has uncontrollable, unfocused feelings of rage. What has most likely been damaged?

Accepted Answer

A)   medulla oblongata
B)   limbic system
C)   pineal gland
D)   primary motor area
E)   cerebellumF) None of the above
G) B) and C) B

Question 14

People who are under constant stress have a tendency to gain weight, especially in the midsection, even if they do not overeat. This is because the hypothalamus responds to the stress by stimulating the

Accepted Answer

A)   posterior pituitary.
B)   adrenal cortex.
C)   thyroid.
D)   adrenal medulla.
E)   pancreas.F) C) and E)
G) A) and C)

Question 15

You aren't normally aware of ongoing sensory stimulation, such as the touch of clothing on your skin. What part of your brain is responsible for this "filtering" of sensory input?

Accepted Answer

A)   hypothalamus
B)   medulla oblongata
C)   cerebral cortex
D)   cerebellum
E)   thalamusF) A) and D)
G) A) and E)

Question 16

You are relaxing, having a snack and watching TV, when suddenly the entire house begins to shake violently. The activity of your _____ quickly decreases, while that of your _____ increases.

Accepted Answer

A)   somatic nervous system; autonomic nervous system
B)   autonomic nervous system; somatic nervous system
C)   sympathetic division; parasympathetic division
D)   sympathetic division; somatic nervous system
E)   parasympathetic division; sympathetic divisionF) B) and D)
G) B) and C) E

Question 17

If a neuron receives both excitatory and inhibitory signals, will an action potential be generated?

Accepted Answer

A)   No, because any inhibitory signals will cancel out the excitatory signals.
B)   Yes, but the action potential will be much smaller than if only excitatory signals were received.
C)   It depends; if more excitatory than inhibitory signals are received, then an action potential may result.
D)   Yes, because excitatory signals always stimulate an action potential.
E)   It depends; if more inhibitory than excitatory signals are received, then the neuron will be free to produce an action potential.F) A) and E)
G) A) and B)

Question 18

A nerve impulse travels down a myelinated axon by

Accepted Answer

A)   repolarization.
B)   saltatory conduction.
C)   simple diffusion.
D)   integration.
E)   summation.F) B) and E)
G) All of the above

Question 19

A spinal nerve contains

Accepted Answer

A)   axons of sensory neurons only.
B)   myelinated axons only.
C)   axons of motor neurons only.
D)   dendrites only.
E)   both sensory and motor axons.F) C) and D)
G) B) and C)

Question 20

Dendrites

Accepted Answer

A)   are usually the longest nerve fibers.
B)   are covered with a myelin sheath.
C)   receive signals from sensory receptors or other neurons.
D)   generate nerve impulses.
E)   are longer and less numerous than axons.F) A) and B)
G) A) and C)

Exam 27: The Control Systems

The _____ conveys sensory information to the central nervous system and motor commands away from the central nervous system to skeletal muscles.

Correct Answer
verified

Gaps in the myelin sheath are termed

Correct Answer
verified

Which ion needs to be pumped to the exterior of the axon in order to generate a nerve impulse?

Correct Answer
verified

Which of these works by inhibiting dopamine reuptake into synapses?

Correct Answer
verified

Which of these structures is the pons?

Correct Answer
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E

Which of these is mismatched?

Correct Answer
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Which of these is a second messenger?

Correct Answer
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Correct Answer
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The arrow shows the direction of the nerve impulse in a neuron. Where is the neurotransmitter released from the neuron?

Correct Answer
verified

Weight gain, diabetes mellitus, and a moon-shaped face may indicate

Correct Answer
verified

If you eat a jelly donut, your pancreatic islets will respond by secreting

Correct Answer
verified

Long, myelinated nerve fibers are called _ in the PNS and _ in the CNS.

Correct Answer
verified

Following a severe head injury, a patient has uncontrollable, unfocused feelings of rage. What has most likely been damaged?

Correct Answer
verified
B

People who are under constant stress have a tendency to gain weight, especially in the midsection, even if they do not overeat. This is because the hypothalamus responds to the stress by stimulating the

Correct Answer
verified

You aren't normally aware of ongoing sensory stimulation, such as the touch of clothing on your skin. What part of your brain is responsible for this "filtering" of sensory input?

Correct Answer
verified

You are relaxing, having a snack and watching TV, when suddenly the entire house begins to shake violently. The activity of your _ quickly decreases, while that of your _ increases.

Correct Answer
verified
E

If a neuron receives both excitatory and inhibitory signals, will an action potential be generated?

Correct Answer
verified

A nerve impulse travels down a myelinated axon by

Correct Answer
verified

A spinal nerve contains

Correct Answer
verified

Dendrites

Correct Answer
verified

Exam 27: The Control Systems

The _____ conveys sensory information to the central nervous system and motor commands away from the central nervous system to skeletal muscles.

Correct AnswerverifiedShow Answer

Gaps in the myelin sheath are termed

Correct AnswerverifiedShow Answer

Which ion needs to be pumped to the exterior of the axon in order to generate a nerve impulse?

Correct AnswerverifiedShow Answer

Which of these works by inhibiting dopamine reuptake into synapses?

Correct AnswerverifiedShow Answer

Which of these structures is the pons?

Correct AnswerverifiedE

Which of these is mismatched?

Correct AnswerverifiedShow Answer

Which of these is a second messenger?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The arrow shows the direction of the nerve impulse in a neuron. Where is the neurotransmitter released from the neuron?

Correct AnswerverifiedShow Answer

Weight gain, diabetes mellitus, and a moon-shaped face may indicate

Correct AnswerverifiedShow Answer

If you eat a jelly donut, your pancreatic islets will respond by secreting

Correct AnswerverifiedShow Answer

Long, myelinated nerve fibers are called _____ in the PNS and _____ in the CNS.

Correct AnswerverifiedShow Answer

Following a severe head injury, a patient has uncontrollable, unfocused feelings of rage. What has most likely been damaged?

Correct AnswerverifiedB

People who are under constant stress have a tendency to gain weight, especially in the midsection, even if they do not overeat. This is because the hypothalamus responds to the stress by stimulating the

Correct AnswerverifiedShow Answer

You aren't normally aware of ongoing sensory stimulation, such as the touch of clothing on your skin. What part of your brain is responsible for this "filtering" of sensory input?

Correct AnswerverifiedShow Answer

You are relaxing, having a snack and watching TV, when suddenly the entire house begins to shake violently. The activity of your _____ quickly decreases, while that of your _____ increases.

Correct AnswerverifiedE

If a neuron receives both excitatory and inhibitory signals, will an action potential be generated?

Correct AnswerverifiedShow Answer

A nerve impulse travels down a myelinated axon by

Correct AnswerverifiedShow Answer

A spinal nerve contains

Correct AnswerverifiedShow Answer

Dendrites

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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E

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
verified

Long, myelinated nerve fibers are called _ in the PNS and _ in the CNS.

Correct Answer
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Correct Answer
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B

Correct Answer
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Correct Answer
verified

You are relaxing, having a snack and watching TV, when suddenly the entire house begins to shake violently. The activity of your _ quickly decreases, while that of your _ increases.

Correct Answer
verified
E

Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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