Neuroanatomy Overview - Spinal Cord & Peripheral Nervous System

Front 1

Throughout the nervous system, ____ systems tend to be more ventral or anterior; ____ systems more dorsal or posterior.

Back 1

motor, sensory

Front 2

In the spinal cord, ______ systems tend to be more ventral or anterior; ______ systems more dorsal or posterior.

Back 2

motor, sensory

Front 3

Dorsal nerve r oots convey mainly __(afferent/efferent)___ sensory information into the dorsal spinal cord.

Back 3

afferent

Front 4

Ventral nerve roots carry mainly __(afferent/efferent)___ sensory information from the ventral spinal cord to the periphery.

Back 4

efferent

Front 5

Define "plexus."

Back 5

An elaborate meshwork of peripheral nerves

Front 6

The autonomic nervous system is divided into what two components?

Back 6

sympathetic and parasympathetic

Front 7

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.

Back 7

sympathetic, norepinephrine

Front 8

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.

Back 8

parasympathetic, acetylcholine

Front 9

The following set of signs reflects a defect of __(upper/lower)__ motor neuron: spastic paralysis, no muscle atrophy, hyperreflexia

Back 9

upper

Front 10

The following set of signs reflects a defect of ___(upper/lower)___ motor neuron: flaccid paralysis, significant atrophy hyporeflexia

Back 10

lower

Front 11

Cerebellar lesions tend to produce ___(contralateral/ipsilateral)__ defects, whereas cerebral lesions result in ___(contralateral/ipsilateral)__ defects.

Back 11

ipsilateral, contralateral