NUR 529 McCance Ch 15 The Neurologic
System Questions With Complete Solutions
afferent pathways (ascending pathways) Correct
Answers carry sensory impulses toward the CNS
anterior cerebral artery Correct Answers * serves
basal ganglia, corpus callosum, medial surface of
cerebral hemispheres, superior surface of frontal
and parietal lobes
* occlusion causes: hemiplegia on contralateral
side of body, greater in lower than upper
extremities
anterior fossa Correct Answers depression of
cranium where frontal lobe lies
anterior horn (ventral horn) Correct Answers
contains nerve cell bodies for efferent pathways
leaving the spinal cord by way of the spinal nerves
arachnoid membrane Correct Answers * lies
below the dura mater
* characterized by its filmy weblike structure
* loosely follows the contours of the cerebral
structures but lies over the sulci
arachnoid villi Correct Answers * protrude from
the arachnoid space, through the dura mater, and
lie w/in the blood flow of the venous sinuses
,* function as one-way valves directing CSF outflow
into the blood but preventing blood flow into the
subarachnoid space
arterial circle (circle of Willis) Correct Answers *
structure credited with ability to compensate for
reduced blood flow from any one of major
contributors (collateral blood flow)
* formed by posterior cerebral arteries, posterior
communicating arteries, internal carotid arteries,
anterior cerebral arteries and anterior
communicating artery
associational neurons Correct Answers
interneurons
multipolar
transmit from neuron to neuron
astrocytes Correct Answers * fill spaces b/n
neurons- build structural framework around
neurons
* surround blood vessels in CNS
* most abundant glial cell
Autonomic nervous system (ANS) Correct Answers
consists of motor and sensory components;
involved in regulation of body's internal (visceral)
environment through involuntary control of organ
systems
, Autonomic nervous system divisions Correct
Answers sympathetic and parasympathetic
axon Correct Answers long, conductive
projections from the cell body that carry nerve
impulses away from the soma
axon hillock Correct Answers cone-shaped,
organelle-free area where axon leaves cell body
basal ganglia system Correct Answers aka
extrapyramidal system; efferent pathways outside
of the pyramids of the medulla oblongata
basal ganglia system (extrapyramidal system)
Correct Answers * consists of basal ganglia,
thalamus, premotor cortex, red nucleus, reticular
formation, and spinal cord
* believed to exert a fine-tuning effect on motor
movements
bipolar neurons Correct Answers 2 distinct
processes arising from cell body; connects to rod
and cone cells of retina
Blood brain barrier Correct Answers * describes
cellular structures that selectively inhibit certain
substances in the blood from entering the
interstitial spaces of the brain or CSF
System Questions With Complete Solutions
afferent pathways (ascending pathways) Correct
Answers carry sensory impulses toward the CNS
anterior cerebral artery Correct Answers * serves
basal ganglia, corpus callosum, medial surface of
cerebral hemispheres, superior surface of frontal
and parietal lobes
* occlusion causes: hemiplegia on contralateral
side of body, greater in lower than upper
extremities
anterior fossa Correct Answers depression of
cranium where frontal lobe lies
anterior horn (ventral horn) Correct Answers
contains nerve cell bodies for efferent pathways
leaving the spinal cord by way of the spinal nerves
arachnoid membrane Correct Answers * lies
below the dura mater
* characterized by its filmy weblike structure
* loosely follows the contours of the cerebral
structures but lies over the sulci
arachnoid villi Correct Answers * protrude from
the arachnoid space, through the dura mater, and
lie w/in the blood flow of the venous sinuses
,* function as one-way valves directing CSF outflow
into the blood but preventing blood flow into the
subarachnoid space
arterial circle (circle of Willis) Correct Answers *
structure credited with ability to compensate for
reduced blood flow from any one of major
contributors (collateral blood flow)
* formed by posterior cerebral arteries, posterior
communicating arteries, internal carotid arteries,
anterior cerebral arteries and anterior
communicating artery
associational neurons Correct Answers
interneurons
multipolar
transmit from neuron to neuron
astrocytes Correct Answers * fill spaces b/n
neurons- build structural framework around
neurons
* surround blood vessels in CNS
* most abundant glial cell
Autonomic nervous system (ANS) Correct Answers
consists of motor and sensory components;
involved in regulation of body's internal (visceral)
environment through involuntary control of organ
systems
, Autonomic nervous system divisions Correct
Answers sympathetic and parasympathetic
axon Correct Answers long, conductive
projections from the cell body that carry nerve
impulses away from the soma
axon hillock Correct Answers cone-shaped,
organelle-free area where axon leaves cell body
basal ganglia system Correct Answers aka
extrapyramidal system; efferent pathways outside
of the pyramids of the medulla oblongata
basal ganglia system (extrapyramidal system)
Correct Answers * consists of basal ganglia,
thalamus, premotor cortex, red nucleus, reticular
formation, and spinal cord
* believed to exert a fine-tuning effect on motor
movements
bipolar neurons Correct Answers 2 distinct
processes arising from cell body; connects to rod
and cone cells of retina
Blood brain barrier Correct Answers * describes
cellular structures that selectively inhibit certain
substances in the blood from entering the
interstitial spaces of the brain or CSF
