Exam 8: Control of Movement

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The direct pathway between the basal ganglia and the motor cortex is ________ for motor movement, whereas the overall effect of the indirect pathway is ________.

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Contrast the functions of the supplemental motor area with that of the premotor area.

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The supplemental motor area (SMA) and the premotor area lie just anterior to the primary motor cortex. These two regions exert influence on the primary motor cortex to modulate its control of motor function. In general, the SMA plays a role in planning of behavioral sequences, such as pressing a series of buttons. Inactivation of the SMA did not alter reaching, but did disrupt the ability to make a series of already learned responses. In contrast, the premotor cortex is important for using arbitrary stimuli to guide motor reactions.

The patellar reflex

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D

A person suffering from Parkinson's disease may experience ________ as a side effect of treatment using L-DOPA.

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2- Muscle rigidity, slowness of movement, resting tremor, and postural instability are symptoms of ________ disease.

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2- Parkinson's disease results from loss of dopamine-secreting neurons of the ________ bundle.

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The muscle rigidity and poor control of posture noted in Parkinson's disease reflects

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A transection through the ________ of a cat is likely to produce ________.

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2- The ________ controls of the activity of the gamma motor system and thus regulates muscle tone.

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The cerebellar ________ receives somatosensory information and influences the vestibulospinal and reticulospinal tracts.

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The key deficit in constructional apraxia involves

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Which of the following is true of skeletal muscle?

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The function of intrafusal muscle fibers is to

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Muscle-builders show off their muscles by

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The vertical patch of cortex located rostral to the central sulcus is known as the

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Which of the following is an example of a polysynaptic reflex?

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Electrical stimulation of the mesencephalic region located ventral to the inferior colliculus in the cat will

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The basal ganglia receive some level of input from

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Damage involving the ________ tract would be expected to impair posture.

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Indicate the location and function of (a) extrafusal muscle fibers, (b) alpha motor neurons, (c) the muscle spindle, (d) intrafusal muscle fibers, and (e) the gamma motor neuron.

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