Test Bank Questions and Answers with
Rationales Latest Update 2026/2027
Question 1
A 54-year-old male presents with progressive muscle weakness, hyperreflexia, a
positive Babinski sign, and spasticity. Which physiological mechanism best explains
his hyperreflexia?
A. Direct hypersensitization and degeneration of the neuromuscular junction receptors
B. Spontaneous depolarization of the peripheral alpha motor neurons in the spinal
cord
C. Loss of supraspinal inhibitory control over the alpha motor neuron reflex arc
D. Excessive acetylcholinesterase activity degrading inhibitory neurotransmitters at
the synapse
,VERIFIED ANSWER: C
EXPLANATION: Upper motor neuron (UMN) lesions disrupt the descending
inhibitory pathways (such as the corticospinal tract) that originate in the brain and
brainstem. When these descending inhibitory signals are lost, the lower spinal reflex
arc becomes disinhibited, leading to the clinical manifestations of hyperreflexia,
spasticity, and clonus. Option A describes neuromuscular junction pathology (e.g.,
myasthenia gravis). Option B describes lower motor neuron (LMN) irritability,
which produces fasciculations rather than hyperreflexia. Option D is structurally
incorrect as acetylcholinesterase operates at the neuromuscular junction, not within
central inhibitory synapses.
Question 2
During a neurological examination of a patient with a suspected lower motor neuron
(LMN) lesion of the right upper extremity, which specific physical finding would the
advanced practice nurse expect to document?
A. Clasp-knife spasticity and a sustained ankle clonus
B. Exaggerated deep tendon reflexes graded at 4+ with spread
C. Contralateral sensory dissociation with preserved ipsilateral motor function
D. Marked muscle atrophy accompanied by fasciculations and hyporeflexia
VERIFIED ANSWER: D
EXPLANATION: Lower motor neuron (LMN) lesions disrupt the "final common
pathway" connecting the central nervous system directly to the skeletal muscles.
This disruption removes the trophic factors necessary for muscle maintenance,
leading to rapid, marked denervation atrophy. It also causes mechanical instability
of the muscle fibers (resulting in fasciculations) and interrupts the efferent limb of
the deep tendon reflex arc, causing hyporeflexia or areflexia. Options A and B are
hallmark features of upper motor neuron (UMN) lesions. Option C describes a
hemicord lesion (Brown-Séquard syndrome), which is a structural spinal cord
pattern, not a isolated LMN finding.
Question 3
,An advanced practice nurse assesses a patient who suffered a knife wound resulting in
a right-sided hemicord lesion (Brown-Séquard syndrome) at the T10 level. What
motor and sensory dissociation will the nurse identify below the lesion?
A. Ipsilateral spastic paralysis and loss of proprioception/vibration, with contralateral
loss of pain and temperature
B. Contralateral spastic paralysis and loss of proprioception/vibration, with ipsilateral
loss of pain and temperature
C. Bilateral flaccid paralysis with total loss of all sensory modalities below T10
D. Ipsilateral loss of pain and temperature with contralateral loss of motor function
VERIFIED ANSWER: A
EXPLANATION: In Brown-Séquard syndrome, the anatomical paths of the spinal
cord tracts dictate the presentation. The corticospinal tract (motor) and dorsal
columns (proprioception, vibration, deep touch) have already crossed or travel
ipsilaterally within the cord, meaning damage results in ipsilateral (same-side)
motor loss and proprioceptive deficits. Conversely, the lateral spinothalamic tract
(pain and temperature) decussates (crosses over) within 1 to 2 spinal segments of
entering the cord; thus, a right-sided lesion interrupts the signals coming from the
left side of the body, leading to contralateral loss of pain and temperature sensation.
Question 4
While performing rapid alternating movements (RAM) during a cerebellar
assessment, the nurse practitioner notes that the patient exhibits clumsy, irregular, and
slow movements with alternating pronation and supination. How should the nurse
document this finding?
A. Apraxia of the upper extremity
B. Extrapyramidal rigidity with cogwheeling
C. Intention tremor during targeted reaching
D. Dysdiadochokinesia
VERIFIED ANSWER: D
EXPLANATION: Dysdiadochokinesia is the specific clinical term for the inability
to perform rapid, alternating movements smoothly and rhythmically. It is a sensitive
, indicator of cerebellar hemisphere dysfunction on the ipsilateral side. Option A
(apraxia) refers to the inability to execute learned, purposeful movements despite
having intact motor and sensory function. Option B (cogwheel rigidity) is associated
with basal ganglia pathology, such as Parkinson's disease. Option C (intention
tremor) is a tremor that worsens as a limb approaches a precise target, which is
distinct from the breakdown of rapid rhythm tested by RAM.
Question 5
An advanced practice nurse places a familiar object, such as a coin, into a patient’s
closed hand and asks them to identify it. The patient is unable to recognize the object
despite intact primary sensory modalities. What is this clinical deficit called, and
which lobe is primarily implicated?
A. Aphasia, implicating the temporal lobe
B. Agraphesthesia, implicating the frontal lobe
C. Astereognosis, implicating the parietal lobe
D. Anosognosia, implicating the occipital lobe
VERIFIED ANSWER: C
EXPLANATION: Astereognosis (tactile agnosia) is the inability to recognize a
common object by touch and manipulation alone when primary sensory modalities
(touch, pain, temperature) are fully functional. It indicates a cortical sensory
processing deficit, specifically localized to the contralateral parietal lobe (primary
somatosensory integration area). Option A is a language disorder. Option B
(agraphesthesia) is the inability to recognize numbers or letters traced on the skin.
Option D (anosognosia) is a deficit of self-awareness where a patient does not
recognize their own neurological deficits or paralysis.
Question 6
When assessing a patient with suspected subarachnoid hemorrhage or acute
meningitis, the nurse flexes the patient's neck and observes involuntary flexion of the
hips and knees. What is the name and significance of this physical sign?
A. Brudzinski’s sign; indicative of meningeal irritation