SCRN
PRACTICE EXAM
Verified Questions & Answers With Rationales
PASS THE “FINAL EXAM” WITH 90% OR HIGHER
WHAT’S INSIDE:
SCRN PRACTICE EXAM
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IDEAL FOR EXAM PREPARATION & CONCEPT PREPARATION
QUESTIONS AND ANSWERS(VERIFIED)
GRADED A+
100% GUARANTEE PASS
,1. A person with a stroke who seems unaware of their disability is demonstrating:
A) Aphasia
B) Apraxia
C) Anosognosia
D) Agnosia
Correct Answer: C) Anosognosia
Rationale: Anosognosia is a condition in which a patient is unaware of or denies their
neurological deficit or disability. This is commonly seen in stroke patients, particularly those with
right hemisphere damage affecting the parietal lobe. Aphasia is a language disorder, apraxia is the
inability to perform purposeful movements, and agnosia is the inability to recognize objects
despite intact sensory function.
2. A patient presents complaining of double vision and lacks horizontal eye movements while
vertical tracking is preserved. Internuclear ophthalmoplegia (INO) is caused by a lesion in which
area of the brain?
A) Cerebellum
B) Brainstem (medial longitudinal fasciculus)
C) Occipital lobe
D) Frontal lobe
Correct Answer: B) Brainstem (medial longitudinal fasciculus)
Rationale: Internuclear ophthalmoplegia (INO) is caused by damage to the medial longitudinal
fasciculus (MLF) in the brainstem. This condition results in impaired adduction of the ipsilateral
eye with nystagmus of the contralateral eye during abduction. The most common causes include
multiple sclerosis (bilateral INO) and ischemic stroke (unilateral INO). The cerebellum, occipital
lobe, and frontal lobe are not associated with INO.
3. A watershed stroke is best described as:
A) Stroke caused by embolism from the heart
B) Stroke between two adjacent cerebral arteries
C) Stroke affecting the deep white matter
,D) Stroke caused by venous thrombosis
Correct Answer: B) Stroke between two adjacent cerebral arteries
Rationale: A watershed or border-zone infarct occurs in the areas of the brain that receive
blood supply from the distal ends of two adjacent major cerebral arteries. These regions are
particularly vulnerable to hypoperfusion and ischemia when systemic blood pressure drops.
Classic locations include the territories between the MCA and ACA and between the MCA and
PCA.
4. Cerebrospinal fluid (CSF) is produced at a rate of approximately:
A) 0.1-0.2 mL/min
B) 0.3-0.4 mL/min
C) 0.5-0.6 mL/min
D) 0.7-0.8 mL/min
Correct Answer: B) 0.3-0.4 mL/min
Rationale: CSF is produced by the choroid plexus at a rate of approximately 0.3-0.4 mL/min,
which equals about 20-25 mL/hour or 500 mL/day. The total volume of CSF in an adult is
approximately 150 mL, meaning the entire CSF volume is replaced about 3-4 times daily.
5. A patient with locked-in syndrome most likely had an infarct in the:
A) Midbrain
B) Medulla oblongata
C) Pons (pontine)
D) Cerebellum
Correct Answer: C) Pons (pontine)
Rationale: Locked-in syndrome results from bilateral damage to the ventral pons, typically due
to occlusion of the basilar artery. This lesion interrupts corticospinal and corticobulbar tracts while
sparing the reticular activating system and vertical eye movements. Patients are conscious and
, aware but cannot move or speak, communicating only through vertical eye movements and
blinking.
6. A lacunar infarct is indicative of an event occurring in:
A) A large cerebral artery
B) A small artery (penetrating arteriole)
C) A cerebral vein
D) The circle of Willis
Correct Answer: B) A small artery (penetrating arteriole)
Rationale: Lacunar infarcts are small (0.5-15 mm) ischemic lesions that occur in the deep areas
of the brain supplied by penetrating arterioles. They are typically caused by lipohyalinosis or
microatheroma in small penetrating arteries. Common locations include the basal ganglia,
thalamus, internal capsule, and pons. Hypertension is the primary risk factor.
7. The MOST important point to emphasize in a community education program on strokes that
will directly improve patient outcome and disability in the setting of a stroke is:
A) Aspirin administration
B) Activate Emergency Medical Services (EMS)
C) Identifying stroke risk factors
D) Taking blood pressure medications
Correct Answer: B) Activate Emergency Medical Services (EMS)
Rationale: Prompt activation of EMS is the single most important factor in improving stroke
outcomes because it ensures rapid transport to a stroke center, early evaluation, and timely
administration of thrombolytic therapy. The "time is brain" principle emphasizes that earlier
treatment directly correlates with better functional outcomes. While the other options are
important, none have as direct an impact on immediate patient outcomes as activating EMS.
8. Which of the following is a risk factor for spontaneous carotid dissection?
A) Atherosclerosis
B) Connective tissue disease
C) Diabetes mellitus
PRACTICE EXAM
Verified Questions & Answers With Rationales
PASS THE “FINAL EXAM” WITH 90% OR HIGHER
WHAT’S INSIDE:
SCRN PRACTICE EXAM
STUDY REVIEW POINTS
IDEAL FOR EXAM PREPARATION & CONCEPT PREPARATION
QUESTIONS AND ANSWERS(VERIFIED)
GRADED A+
100% GUARANTEE PASS
,1. A person with a stroke who seems unaware of their disability is demonstrating:
A) Aphasia
B) Apraxia
C) Anosognosia
D) Agnosia
Correct Answer: C) Anosognosia
Rationale: Anosognosia is a condition in which a patient is unaware of or denies their
neurological deficit or disability. This is commonly seen in stroke patients, particularly those with
right hemisphere damage affecting the parietal lobe. Aphasia is a language disorder, apraxia is the
inability to perform purposeful movements, and agnosia is the inability to recognize objects
despite intact sensory function.
2. A patient presents complaining of double vision and lacks horizontal eye movements while
vertical tracking is preserved. Internuclear ophthalmoplegia (INO) is caused by a lesion in which
area of the brain?
A) Cerebellum
B) Brainstem (medial longitudinal fasciculus)
C) Occipital lobe
D) Frontal lobe
Correct Answer: B) Brainstem (medial longitudinal fasciculus)
Rationale: Internuclear ophthalmoplegia (INO) is caused by damage to the medial longitudinal
fasciculus (MLF) in the brainstem. This condition results in impaired adduction of the ipsilateral
eye with nystagmus of the contralateral eye during abduction. The most common causes include
multiple sclerosis (bilateral INO) and ischemic stroke (unilateral INO). The cerebellum, occipital
lobe, and frontal lobe are not associated with INO.
3. A watershed stroke is best described as:
A) Stroke caused by embolism from the heart
B) Stroke between two adjacent cerebral arteries
C) Stroke affecting the deep white matter
,D) Stroke caused by venous thrombosis
Correct Answer: B) Stroke between two adjacent cerebral arteries
Rationale: A watershed or border-zone infarct occurs in the areas of the brain that receive
blood supply from the distal ends of two adjacent major cerebral arteries. These regions are
particularly vulnerable to hypoperfusion and ischemia when systemic blood pressure drops.
Classic locations include the territories between the MCA and ACA and between the MCA and
PCA.
4. Cerebrospinal fluid (CSF) is produced at a rate of approximately:
A) 0.1-0.2 mL/min
B) 0.3-0.4 mL/min
C) 0.5-0.6 mL/min
D) 0.7-0.8 mL/min
Correct Answer: B) 0.3-0.4 mL/min
Rationale: CSF is produced by the choroid plexus at a rate of approximately 0.3-0.4 mL/min,
which equals about 20-25 mL/hour or 500 mL/day. The total volume of CSF in an adult is
approximately 150 mL, meaning the entire CSF volume is replaced about 3-4 times daily.
5. A patient with locked-in syndrome most likely had an infarct in the:
A) Midbrain
B) Medulla oblongata
C) Pons (pontine)
D) Cerebellum
Correct Answer: C) Pons (pontine)
Rationale: Locked-in syndrome results from bilateral damage to the ventral pons, typically due
to occlusion of the basilar artery. This lesion interrupts corticospinal and corticobulbar tracts while
sparing the reticular activating system and vertical eye movements. Patients are conscious and
, aware but cannot move or speak, communicating only through vertical eye movements and
blinking.
6. A lacunar infarct is indicative of an event occurring in:
A) A large cerebral artery
B) A small artery (penetrating arteriole)
C) A cerebral vein
D) The circle of Willis
Correct Answer: B) A small artery (penetrating arteriole)
Rationale: Lacunar infarcts are small (0.5-15 mm) ischemic lesions that occur in the deep areas
of the brain supplied by penetrating arterioles. They are typically caused by lipohyalinosis or
microatheroma in small penetrating arteries. Common locations include the basal ganglia,
thalamus, internal capsule, and pons. Hypertension is the primary risk factor.
7. The MOST important point to emphasize in a community education program on strokes that
will directly improve patient outcome and disability in the setting of a stroke is:
A) Aspirin administration
B) Activate Emergency Medical Services (EMS)
C) Identifying stroke risk factors
D) Taking blood pressure medications
Correct Answer: B) Activate Emergency Medical Services (EMS)
Rationale: Prompt activation of EMS is the single most important factor in improving stroke
outcomes because it ensures rapid transport to a stroke center, early evaluation, and timely
administration of thrombolytic therapy. The "time is brain" principle emphasizes that earlier
treatment directly correlates with better functional outcomes. While the other options are
important, none have as direct an impact on immediate patient outcomes as activating EMS.
8. Which of the following is a risk factor for spontaneous carotid dissection?
A) Atherosclerosis
B) Connective tissue disease
C) Diabetes mellitus
