CCRN Exam Neurology Concepts Questions and Answers well Explained Latest 2024/2025 Update 100% Correct.
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Course
CCRN Neurology Concepts
Institution
CCRN Neurology Concepts
oculovestibular reflex assessment - the patient's eyes are held open while ice water is injected
slowly into the ear canal and the eye response is observed (cold calorics)
positive: eyes move toward the side of the ice water injection- positive is good)
Wh brain herniation occurs when ____ - swe...
CCRN Exam Neurology Concepts
oculovestibular reflex assessment - the patient's eyes are held open while ice water is injected
slowly into the ear canal and the eye response is observed (cold calorics)
positive: eyes move toward the side of the ice water injection- positive is good)
Wh brain herniation occurs when ____ - swelling within the brain becomes so severe that
structures of the brain are squeezed to the point where blood cannot get up into the brain and death
may occur
at is the first sign of a neuro problem? - change in LOC, except for an epidural hematoma that may
cause pupil changes before an LOC change
Circle of Willis definition - a circulatory anastomosis comprised of various arteries that supply
blood to the brain, a well developed Circle of Willis allows collateral blood flow to one area from another
area in the event of an occlusion
all cranial nerves arise from ____ except cranial nervers ____ and ____ which arise from ____ -
the brain stem
cranial nerves I and II
above the brain stem
blood supply to the brain includes the ___ and ___ - basal vertebral (supplies lower areas, brain
stem)
carotids (supply upper areas, L internal carotid is dominant for most people)
frontal lobe function - personality, abstract thought, long-term memory
temporal lobe function - hearing, sense of taste and smell, interpretations
occipital lobe function - vision, visual recognition, reading comprehension
, parietal lobe function - obejct recognition by size, weight shape, body part awareness
cerebellum function - coordination, balance, gait
which arteries is the Circle of Willis composed of? - anterior cerebral artery (L and R), anterior
communicating artery, internal carotid artery ( L and R), posterior cerebral artery (L and R), posterior
communicating artery (L and R)
the ____ and ____ arteries are NOT part of the Circle of Willis - basilar artery and middle cerebral
arteries (MCA)
consciousness depends on ____ - an intact cerebral cortex and reticular activating system (RAS)
Reticular Activating System (RAS) - a network of neurons connecting the brain stem (lower RAS) to
the cortex (higher RAS)
Upper RAS is responsible for ____ - awareness
Lower RAS is responsible for ____ - the sleep-wake cycle
if the lower RAS is damaged, ____ occurs, if only the upper portion of the RAS is damaged, the patient
____ - coma
the patient loses awareness but still wakes up and goes to sleep
Broca's area - speech/language in L hemisphere
Decussation - crossing of motor fibers occurs in the medulla, motor problems are contralateral to
the problem
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