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11 Cards in this Set
- Front
- Back
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Throughout the nervous system, ____ systems tend to be more ventral or anterior; ____ systems more dorsal or posterior.
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motor, sensory
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In the spinal cord, ______ systems tend to be more ventral or anterior; ______ systems more dorsal or posterior.
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motor, sensory
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Dorsal nerve r oots convey mainly __(afferent/efferent)___ sensory information into the dorsal spinal cord.
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afferent
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Ventral nerve roots carry mainly __(afferent/efferent)___ sensory information from the ventral spinal cord to the periphery.
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efferent
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Define "plexus."
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An elaborate meshwork of peripheral nerves
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The autonomic nervous system is divided into what two components?
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sympathetic and parasympathetic
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Within the ANS, the _____ system arises from thoracic and lumbar levels and releases the neurotransmitter _______ onto end organs, and is involved in "fight or flight" functions.
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sympathetic, norepinephrine
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Within the ANS, the _____ system arises from the cranial nerves and from the sacral spinal levels (S2-S4), it releases the neurotransmitter ________ onto end organs and is involved in sedentary functions such as increasing gastric secretions and peristalsis, slowing heart rate, and decreasing pupil size.
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parasympathetic, acetylcholine
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The following set of signs reflects a defect of __(upper/lower)__ motor neuron: spastic paralysis, no muscle atrophy, hyperreflexia
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upper
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The following set of signs reflects a defect of ___(upper/lower)___ motor neuron: flaccid paralysis, significant atrophy hyporeflexia
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lower
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Cerebellar lesions tend to produce ___(contralateral/ipsilateral)__ defects, whereas cerebral lesions result in ___(contralateral/ipsilateral)__ defects.
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ipsilateral, contralateral
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