Quiz 7 Flashcards

1
Q

vigorous use of fast-twitch fibers is enabled as a result of a process called ___

A

aerobic

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2
Q

vigorous use of fast-twitch fibers results in fatigue because the process is ___

A

anaerobic

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3
Q

moving a leg or arm back and forth requires opposing sets of muscles known as _____

A

antagonistic muscles

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4
Q

the main function of the cardiac muscle is to allow the heart to pump blood

A

true

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5
Q

our own mirror neurons are active when we watch someone else engage in motor behavior like playing the piano

A

true

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6
Q

which muscle is “antagonistic” to a flexor muscle in the right arm?

A

an extensor muscle in the right arm

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7
Q

exercising at a high altitude where there is less oxygen is most likely to affect ____

A

slow-twitch fibers

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8
Q

the role of the Golgi tendon organs is to ____

A

prevent extreme muscle contractions

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9
Q

muscle spindles respond to changes in muscle ____

A

stretch

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10
Q

what is the name given to the synapse where a motor neuron’s axon meets a muscle fiber?

A

neuromuscular junction

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11
Q

skeletal muscles are typically _____

A

striated muscles

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12
Q

the structure composed of the caudate nucleus, putamen, and globus pallidus is the ___

A

basal ganglia

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13
Q

the posterior parietal cortex ___

A

keeps track of the position relative to the world

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14
Q

the prefrontal cortex ___

A

responds to

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15
Q

the part of the cortex that is most active during preparations for a movement and less active during the movement itself is the ___

A

premotor cortex

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16
Q

cells in which area are involved in the preparation for a movement, sending messages to the primary motor cortex

A

supplementary motor cortex

17
Q

which of the following would be the most promising treatment for Huntington’s disease?

A

blocking the formation of glutamine chain clustering

18
Q

what is the most common drug in the treatment of Parkinson’s disease?

A

L-dopa

19
Q

what is the effect of the drug MPTP?

A

it kills the neurons that release dopamine

20
Q

parkinson’s disease is associated with a loss of neurons in the ____

A

substantia nigra that release dopamine