CBIS Certified Brain Injury Specialist Exam 2026/2027 |
Certified Brain Injury Specialist Certification Study Guide,
Practice Questions & Answers, CBIS Exam Prep,
Traumatic Brain Injury (TBI), Acquired Brain Injury
(ABI), Neuroanatomy, Cognitive & Behavioral
Impairments, Assessment, Rehabilitation, Recovery,
Community Reintegration, Ethics & Detailed Rationales
Question 1: A patient exhibits profound personality changes,
disinhibition, and difficulty planning future actions after a traumatic
brain injury. Which lobe is most likely injured?
A. Parietal lobe
B. Occipital lobe
C. Frontal lobe
D. Temporal lobe
CORRECT ANSWER: C. Frontal lobe
Rationale: The frontal lobe mediates executive functions including
planning, organization, and behavioral inhibition. Damage produces
disinhibition, personality change, and impaired future planning, which is a
hallmark of frontal lobe pathology.
Question 2: Which brain structure serves as the primary relay station
for sensory information (except smell) en route to the cerebral cortex?
A. Hypothalamus
B. Thalamus
C. Pons
D. Reticular formation
CORRECT ANSWER: B. Thalamus
Rationale: The thalamus relays sensory and motor signals to the cerebral
cortex. The hypothalamus regulates autonomic and endocrine functions;
the pons participates in respiration and sleep; the reticular formation
mediates arousal.
Question 3: A patient exhibits flaccid paralysis on the right side of the
body. Where is the lesion most likely located?
A. Peripheral nerve
B. Cerebellum
,C. Motor cortex or corticospinal tract
D. Dorsal root ganglion
CORRECT ANSWER: C. Motor cortex or corticospinal tract
Rationale: Upper motor neuron lesions affecting the motor cortex or
corticospinal tract produce contralateral weakness or paralysis. Flaccidity
may occur during the acute shock phase. Cerebellar damage causes ataxia
rather than paralysis.
Question 4: Damage to the hippocampus primarily results in which
deficit?
A. Inability to coordinate voluntary movement
B. Difficulty forming new memories
C. Loss of visual field
D. Inability to comprehend language
CORRECT ANSWER: B. Difficulty forming new memories
Rationale: The hippocampus is critical for consolidating short-term
memory into long-term memory. Bilateral damage produces anterograde
amnesia, the inability to form new declarative memories.
Question 5: Which brain structure is primarily responsible for
maintaining balance and coordination?
A. Medulla oblongata
B. Cerebellum
C. Corpus callosum
D. Amygdala
CORRECT ANSWER: B. Cerebellum
Rationale: The cerebellum coordinates voluntary movement, posture, and
balance. The medulla controls vital autonomic functions; the corpus
callosum connects hemispheres; the amygdala processes emotion.
Question 6: A patient presents with bitemporal hemianopsia after brain
injury. Where is the lesion most likely?
A. Optic chiasm
B. Left occipital lobe
,C. Right optic nerve
D. Frontal eye fields
CORRECT ANSWER: A. Optic chiasm
Rationale: The optic chiasm is where nasal retinal fibers cross.
Compression from mass effect or swelling causes loss of temporal visual
fields in both eyes (bitemporal hemianopsia).
Question 7: What is the primary function of the reticular activating
system (RAS)?
A. Motor control
B. Arousal and consciousness
C. Temperature regulation
D. Hunger and satiety
CORRECT ANSWER: B. Arousal and consciousness
Rationale: The RAS is a brainstem network regulating wakefulness, arousal,
and sleep-wake transitions. Damage can result in coma or persistent
vegetative state.
Question 8: Which cranial nerve controls pupil constriction and
accommodation?
A. CN II (Optic)
B. CN III (Oculomotor)
C. CN V (Trigeminal)
D. CN VII (Facial)
CORRECT ANSWER: B. CN III (Oculomotor)
Rationale: The oculomotor nerve contains parasympathetic fibers that
constrict the pupil and control accommodation. CN II mediates vision; CN
V mediates facial sensation and mastication; CN VII mediates facial
expression.
Question 9: In traumatic brain injury, what defines primary injury?
A. The biochemical cascade occurring after the initial impact
B. The neuronal damage occurring at the moment of impact
C. Cerebral edema developing over hours to days
D. Delayed axonal degeneration
, CORRECT ANSWER: B. The neuronal damage occurring at the moment
of impact
Rationale: Primary injury is the immediate mechanical damage sustained
at the moment of impact, including contusions, lacerations, and torn
vessels. Secondary injury refers to subsequent biochemical and
physiological cascades.
Question 10: What is the initial contusion beneath the point of impact
called in coup-contrecoup injury?
A. Contrecoup injury
B. Coup injury
C. Diffuse axonal injury
D. Penetrating injury
CORRECT ANSWER: B. Coup injury
Rationale: In coup-contrecoup injury, the coup injury occurs directly
beneath the point of impact. The contrecoup injury occurs on the
contralateral side as the brain rebounds within the skull.
Question 11: A patient with severe TBI has a Glasgow Coma Scale score
of 6. What does this score indicate?
A. Mild brain injury
B. Moderate brain injury
C. Severe brain injury
D. No brain injury
CORRECT ANSWER: C. Severe brain injury
Rationale: GCS scores of 13-15 indicate mild injury, 9-12 indicate moderate
injury, and 3-8 indicate severe injury. A score of 6 falls within the severe
category.
Question 12: What is the maximum possible Glasgow Coma Scale
score?
A. 10
B. 12
C. 15
D. 20
Certified Brain Injury Specialist Certification Study Guide,
Practice Questions & Answers, CBIS Exam Prep,
Traumatic Brain Injury (TBI), Acquired Brain Injury
(ABI), Neuroanatomy, Cognitive & Behavioral
Impairments, Assessment, Rehabilitation, Recovery,
Community Reintegration, Ethics & Detailed Rationales
Question 1: A patient exhibits profound personality changes,
disinhibition, and difficulty planning future actions after a traumatic
brain injury. Which lobe is most likely injured?
A. Parietal lobe
B. Occipital lobe
C. Frontal lobe
D. Temporal lobe
CORRECT ANSWER: C. Frontal lobe
Rationale: The frontal lobe mediates executive functions including
planning, organization, and behavioral inhibition. Damage produces
disinhibition, personality change, and impaired future planning, which is a
hallmark of frontal lobe pathology.
Question 2: Which brain structure serves as the primary relay station
for sensory information (except smell) en route to the cerebral cortex?
A. Hypothalamus
B. Thalamus
C. Pons
D. Reticular formation
CORRECT ANSWER: B. Thalamus
Rationale: The thalamus relays sensory and motor signals to the cerebral
cortex. The hypothalamus regulates autonomic and endocrine functions;
the pons participates in respiration and sleep; the reticular formation
mediates arousal.
Question 3: A patient exhibits flaccid paralysis on the right side of the
body. Where is the lesion most likely located?
A. Peripheral nerve
B. Cerebellum
,C. Motor cortex or corticospinal tract
D. Dorsal root ganglion
CORRECT ANSWER: C. Motor cortex or corticospinal tract
Rationale: Upper motor neuron lesions affecting the motor cortex or
corticospinal tract produce contralateral weakness or paralysis. Flaccidity
may occur during the acute shock phase. Cerebellar damage causes ataxia
rather than paralysis.
Question 4: Damage to the hippocampus primarily results in which
deficit?
A. Inability to coordinate voluntary movement
B. Difficulty forming new memories
C. Loss of visual field
D. Inability to comprehend language
CORRECT ANSWER: B. Difficulty forming new memories
Rationale: The hippocampus is critical for consolidating short-term
memory into long-term memory. Bilateral damage produces anterograde
amnesia, the inability to form new declarative memories.
Question 5: Which brain structure is primarily responsible for
maintaining balance and coordination?
A. Medulla oblongata
B. Cerebellum
C. Corpus callosum
D. Amygdala
CORRECT ANSWER: B. Cerebellum
Rationale: The cerebellum coordinates voluntary movement, posture, and
balance. The medulla controls vital autonomic functions; the corpus
callosum connects hemispheres; the amygdala processes emotion.
Question 6: A patient presents with bitemporal hemianopsia after brain
injury. Where is the lesion most likely?
A. Optic chiasm
B. Left occipital lobe
,C. Right optic nerve
D. Frontal eye fields
CORRECT ANSWER: A. Optic chiasm
Rationale: The optic chiasm is where nasal retinal fibers cross.
Compression from mass effect or swelling causes loss of temporal visual
fields in both eyes (bitemporal hemianopsia).
Question 7: What is the primary function of the reticular activating
system (RAS)?
A. Motor control
B. Arousal and consciousness
C. Temperature regulation
D. Hunger and satiety
CORRECT ANSWER: B. Arousal and consciousness
Rationale: The RAS is a brainstem network regulating wakefulness, arousal,
and sleep-wake transitions. Damage can result in coma or persistent
vegetative state.
Question 8: Which cranial nerve controls pupil constriction and
accommodation?
A. CN II (Optic)
B. CN III (Oculomotor)
C. CN V (Trigeminal)
D. CN VII (Facial)
CORRECT ANSWER: B. CN III (Oculomotor)
Rationale: The oculomotor nerve contains parasympathetic fibers that
constrict the pupil and control accommodation. CN II mediates vision; CN
V mediates facial sensation and mastication; CN VII mediates facial
expression.
Question 9: In traumatic brain injury, what defines primary injury?
A. The biochemical cascade occurring after the initial impact
B. The neuronal damage occurring at the moment of impact
C. Cerebral edema developing over hours to days
D. Delayed axonal degeneration
, CORRECT ANSWER: B. The neuronal damage occurring at the moment
of impact
Rationale: Primary injury is the immediate mechanical damage sustained
at the moment of impact, including contusions, lacerations, and torn
vessels. Secondary injury refers to subsequent biochemical and
physiological cascades.
Question 10: What is the initial contusion beneath the point of impact
called in coup-contrecoup injury?
A. Contrecoup injury
B. Coup injury
C. Diffuse axonal injury
D. Penetrating injury
CORRECT ANSWER: B. Coup injury
Rationale: In coup-contrecoup injury, the coup injury occurs directly
beneath the point of impact. The contrecoup injury occurs on the
contralateral side as the brain rebounds within the skull.
Question 11: A patient with severe TBI has a Glasgow Coma Scale score
of 6. What does this score indicate?
A. Mild brain injury
B. Moderate brain injury
C. Severe brain injury
D. No brain injury
CORRECT ANSWER: C. Severe brain injury
Rationale: GCS scores of 13-15 indicate mild injury, 9-12 indicate moderate
injury, and 3-8 indicate severe injury. A score of 6 falls within the severe
category.
Question 12: What is the maximum possible Glasgow Coma Scale
score?
A. 10
B. 12
C. 15
D. 20
