EXAM TWO NUR 5461 ADVANCED
PATHOPHYSIOLOGY EXPECTED
QUESTIONS WITH VERIFIED ANSWERS
Question 1.
Which are characteristics of Alzheimer disease? (Select all that apply.)
a. Rapid onset
b. Memory loss
c. Increased irritability
d. Anxiety and depression
ANSWER
b. Memory loss
c. Increased irritability
d. Anxiety and depression
Explanation
Alzheimer disease is a progressive neurodegenerative disorder characterized by several key
clinical features:
Memory loss: This is typically the hallmark symptom, beginning with short-term memory
deficits and progressing to long-term memory loss.
Increased irritability: As the disease affects the brain's ability to process information and
control emotions, patients often exhibit personality changes, including irritability, agitation,
and aggression.
Anxiety and depression: These neuropsychiatric symptoms are extremely common in early
and middle stages as patients struggle with cognitive decline and loss of independence.
Why other options are incorrect
a. Rapid onset: Alzheimer disease is characterized by an insidious (gradual)
onset and a slow, continuous decline over many years. A rapid or sudden onset of cognitive
impairment is more characteristic of delirium or vascular dementia (following a stroke).
,Question 2.
Which cytokines are endogenous pyrogens?
a. IL-3, IL-10, and IL-18
b. IL-2, IL-8, and IFN-B
c. IL-4, IL-12, colony-stimulating factor, and IFN-a
d. IL-1, IL-6, TNF-a , and IFN-y
ANSWER
ANS: d. IL-1, IL-6, TNF-a , and IFN-y
Endogenous pyrogens include prostaglandin E2 (PGE2), interleukin-1 (IL-1), IL-6, tumor
necrosis factor-alpha (TNF-a), and interferon-gamma (IFN- y). The other options are not
endogenous pyrogens.
Question 3.
Which statement is true regarding the specificity theory of pain?
a. Focuses on the attention of pain
b. Focuses on the previous experience of pain
c. Relates the amount of pain to the amount of soft tissue injury
d. Is related to the emotions exhibited toward pain
ANSWER
c. Relates the amount of pain to the amount of soft tissue injury.
Explanation
The specificity theory of pain (originally proposed by Max von Frey) suggests that pain is a
specific sensation with its own dedicated receptors and sensory pathways. A core tenet of
this early theory is that there is a direct, linear relationship between the intensity of the pain
felt and the extent of tissue damage. Essentially, it views pain as a purely physical response to
injury, similar to how vision or hearing works.
Why other options are incorrect
a. Focuses on the attention of pain. This describes aspects of the gate control theory or
cognitive-evaluative models, where psychological factors like attention and distraction can
"open" or "close" the pain gate.
b. Focuses on previous experience of pain. Specificity theory is a purely biological model and
does not account for previous experience, which is a key component of the neuromatrix
theory or the biopsychosocial model.
d. Is related to the emotions exhibited toward pain. Specificity theory ignores
the affective-motivational (emotional) dimension of pain. Emotional regulation of pain is
primarily handled by the limbic system, not the direct pathways described in specificity
theory.
,Question 4.
Which is an arterial bleed from the blood vessels that lie within the grooves of the skull?
A. Subdural
B. Epidural
C. Subarachnoid
D. Lumbar cisterna
ANSWER
Epidural
An epidural hematoma develops from an arterial bleed of blood vessels that lie within the
grooves in the skull. A subdural hematoma is a collection of venous blood between the dura
and the arachnoid. A subarachnoid bleed occurs within the subarachnoid space, which is
between the brain and tissues that cover the brain. CSF, contained within the subarachnoid
space, circulates down to the large lumbar cistern, which extends from the second lumbar
vertebra to the second sacral vertebra. Cisterns are expanded areas of the subarachnoid
space.
Question 5.
45. Clinical manifestations of Parkinson disease are caused by a deficit in which of the brain's
neurotransmitters?
a.
Gamma-aminobutyric acid
b. Dopamine
c. Norepinephrine
d. Acetylcholine
ANSWER
b. Dopamine.
Explanation
Parkinson disease is primarily caused by the progressive destruction of nigrostriatal neurons,
leading to a severe depletion of dopamine. This deficit creates
an imbalance between inhibitory (dopaminergic) and excitatory (cholinergic) signals, resulting
in the characteristic motor symptoms like tremors and bradykinesia.
Why other options are incorrect
a. Gamma-aminobutyric acid (GABA): While GABA is an inhibitory neurotransmit-L ter
involved in the basal ganglia circuitry, its deficit is more specifically linked to Huntington
disease, not the primary onset of Parkinson's.
c. Norepinephrine: Though some loss of norepinephrine-producing terminals L occurs in
Parkinson's (contributing to non-motor symptoms like fatigue), the classic clinical
manifestations are defined by the dopamine deficit.
d. Acetylcholine: In Parkinson disease, there is actually a relative excess of L acetylcholine
activity because there isn't enough dopamine to oppose it. Deficits in acetylcholine are more
closely associated with Alzheimer disease.
, Question 6.
Which statements are true regarding epinephrine? (Select all that apply.)
A. Parasympathetic preganglionic fibers release epinephrine.
B. Dopamine is the precursor of epinephrine.
C. Epinephrine induces general vasodilation.
D. The action
of epinephrine is the same no matter which receptor it binds.
ANSWER
Dopamine is the precursor of epinephrine.
Epinephrine induces general vasodilation.
.
Dopamine is the precursor of both epinephrine and norepinephrine. Epinephrine induces
general vasodilation because of the predominance of β-adrenergic receptors in the muscle
vasculature. Preganglionic sympathetic fibers release epinephrine. Epinephrine varies with
the type of neuroreceptor stimulated.
Question 7.
What part of
the brain provides the emotional response to pain?
a. Limbic system
b. Parietal lobe
c. Thalamus
d. Hypothalamus
ANSWER
ANS: a. Limbic system.
The limbic and reticular tracts are involved in alerting the body to danger, initiating arousal of
the organism, and emotionally processing the perceived afferent signals, not just as stimuli,
but also as pain. The remaining options do not fulfill this objective.
Explanation
The limbic system (specifically the amygdala, cingulate cortex, and insula) is responsible for
the affective-motivational dimension of pain. It processes the psychological "unpleasantness"
and the emotional distress that accompanies a physical injury, turning a sensory signal into a
feeling of suffering.
Why other options are incorrect
b. Parietal lobe: This region contains the somatosensory cortex, which manages L the
sensory-discriminative aspect of pain. It identifies the "cold hard facts" of the stimulus, such
as the exact location, intensity, and type (sharp vs. dull) of the pain.
c. Thalamus: This acts as the brain's relay station. It receives incoming nociceptive L (pain)
signals from the spinal cord and distributes them to the higher cortical centers. While vital for
processing, it does not generate the emotional experience itself.
PATHOPHYSIOLOGY EXPECTED
QUESTIONS WITH VERIFIED ANSWERS
Question 1.
Which are characteristics of Alzheimer disease? (Select all that apply.)
a. Rapid onset
b. Memory loss
c. Increased irritability
d. Anxiety and depression
ANSWER
b. Memory loss
c. Increased irritability
d. Anxiety and depression
Explanation
Alzheimer disease is a progressive neurodegenerative disorder characterized by several key
clinical features:
Memory loss: This is typically the hallmark symptom, beginning with short-term memory
deficits and progressing to long-term memory loss.
Increased irritability: As the disease affects the brain's ability to process information and
control emotions, patients often exhibit personality changes, including irritability, agitation,
and aggression.
Anxiety and depression: These neuropsychiatric symptoms are extremely common in early
and middle stages as patients struggle with cognitive decline and loss of independence.
Why other options are incorrect
a. Rapid onset: Alzheimer disease is characterized by an insidious (gradual)
onset and a slow, continuous decline over many years. A rapid or sudden onset of cognitive
impairment is more characteristic of delirium or vascular dementia (following a stroke).
,Question 2.
Which cytokines are endogenous pyrogens?
a. IL-3, IL-10, and IL-18
b. IL-2, IL-8, and IFN-B
c. IL-4, IL-12, colony-stimulating factor, and IFN-a
d. IL-1, IL-6, TNF-a , and IFN-y
ANSWER
ANS: d. IL-1, IL-6, TNF-a , and IFN-y
Endogenous pyrogens include prostaglandin E2 (PGE2), interleukin-1 (IL-1), IL-6, tumor
necrosis factor-alpha (TNF-a), and interferon-gamma (IFN- y). The other options are not
endogenous pyrogens.
Question 3.
Which statement is true regarding the specificity theory of pain?
a. Focuses on the attention of pain
b. Focuses on the previous experience of pain
c. Relates the amount of pain to the amount of soft tissue injury
d. Is related to the emotions exhibited toward pain
ANSWER
c. Relates the amount of pain to the amount of soft tissue injury.
Explanation
The specificity theory of pain (originally proposed by Max von Frey) suggests that pain is a
specific sensation with its own dedicated receptors and sensory pathways. A core tenet of
this early theory is that there is a direct, linear relationship between the intensity of the pain
felt and the extent of tissue damage. Essentially, it views pain as a purely physical response to
injury, similar to how vision or hearing works.
Why other options are incorrect
a. Focuses on the attention of pain. This describes aspects of the gate control theory or
cognitive-evaluative models, where psychological factors like attention and distraction can
"open" or "close" the pain gate.
b. Focuses on previous experience of pain. Specificity theory is a purely biological model and
does not account for previous experience, which is a key component of the neuromatrix
theory or the biopsychosocial model.
d. Is related to the emotions exhibited toward pain. Specificity theory ignores
the affective-motivational (emotional) dimension of pain. Emotional regulation of pain is
primarily handled by the limbic system, not the direct pathways described in specificity
theory.
,Question 4.
Which is an arterial bleed from the blood vessels that lie within the grooves of the skull?
A. Subdural
B. Epidural
C. Subarachnoid
D. Lumbar cisterna
ANSWER
Epidural
An epidural hematoma develops from an arterial bleed of blood vessels that lie within the
grooves in the skull. A subdural hematoma is a collection of venous blood between the dura
and the arachnoid. A subarachnoid bleed occurs within the subarachnoid space, which is
between the brain and tissues that cover the brain. CSF, contained within the subarachnoid
space, circulates down to the large lumbar cistern, which extends from the second lumbar
vertebra to the second sacral vertebra. Cisterns are expanded areas of the subarachnoid
space.
Question 5.
45. Clinical manifestations of Parkinson disease are caused by a deficit in which of the brain's
neurotransmitters?
a.
Gamma-aminobutyric acid
b. Dopamine
c. Norepinephrine
d. Acetylcholine
ANSWER
b. Dopamine.
Explanation
Parkinson disease is primarily caused by the progressive destruction of nigrostriatal neurons,
leading to a severe depletion of dopamine. This deficit creates
an imbalance between inhibitory (dopaminergic) and excitatory (cholinergic) signals, resulting
in the characteristic motor symptoms like tremors and bradykinesia.
Why other options are incorrect
a. Gamma-aminobutyric acid (GABA): While GABA is an inhibitory neurotransmit-L ter
involved in the basal ganglia circuitry, its deficit is more specifically linked to Huntington
disease, not the primary onset of Parkinson's.
c. Norepinephrine: Though some loss of norepinephrine-producing terminals L occurs in
Parkinson's (contributing to non-motor symptoms like fatigue), the classic clinical
manifestations are defined by the dopamine deficit.
d. Acetylcholine: In Parkinson disease, there is actually a relative excess of L acetylcholine
activity because there isn't enough dopamine to oppose it. Deficits in acetylcholine are more
closely associated with Alzheimer disease.
, Question 6.
Which statements are true regarding epinephrine? (Select all that apply.)
A. Parasympathetic preganglionic fibers release epinephrine.
B. Dopamine is the precursor of epinephrine.
C. Epinephrine induces general vasodilation.
D. The action
of epinephrine is the same no matter which receptor it binds.
ANSWER
Dopamine is the precursor of epinephrine.
Epinephrine induces general vasodilation.
.
Dopamine is the precursor of both epinephrine and norepinephrine. Epinephrine induces
general vasodilation because of the predominance of β-adrenergic receptors in the muscle
vasculature. Preganglionic sympathetic fibers release epinephrine. Epinephrine varies with
the type of neuroreceptor stimulated.
Question 7.
What part of
the brain provides the emotional response to pain?
a. Limbic system
b. Parietal lobe
c. Thalamus
d. Hypothalamus
ANSWER
ANS: a. Limbic system.
The limbic and reticular tracts are involved in alerting the body to danger, initiating arousal of
the organism, and emotionally processing the perceived afferent signals, not just as stimuli,
but also as pain. The remaining options do not fulfill this objective.
Explanation
The limbic system (specifically the amygdala, cingulate cortex, and insula) is responsible for
the affective-motivational dimension of pain. It processes the psychological "unpleasantness"
and the emotional distress that accompanies a physical injury, turning a sensory signal into a
feeling of suffering.
Why other options are incorrect
b. Parietal lobe: This region contains the somatosensory cortex, which manages L the
sensory-discriminative aspect of pain. It identifies the "cold hard facts" of the stimulus, such
as the exact location, intensity, and type (sharp vs. dull) of the pain.
c. Thalamus: This acts as the brain's relay station. It receives incoming nociceptive L (pain)
signals from the spinal cord and distributes them to the higher cortical centers. While vital for
processing, it does not generate the emotional experience itself.
