NR507 FINAL EXAM STUDY GUIDE 2026-2027 QUESTIONS AND
CORRECT ANSWERS (VERIFIED ANSWERS) PLUS RATIONALES
2026 Q&A | INSTANT DOWNLOAD PDF.
Core Domains
Neuron Physiology and Neurotransmission
Blood-Brain Barrier and Cerebral Edema
Motor and Sensory Pathways
Intracranial Pressure Dynamics and Cerebral Autoregulation
Neurodegenerative Disorders
Neurotrauma and Spinal Cord Injury
Seizure Disorders and Headaches
Cerebrovascular Disorders and Infections
Introduction
The NR507 Advanced Pathophysiology Final Examination evaluates
graduate-level integration of pathophysiological mechanisms
across neurological systems for Weeks 5–8. It assesses neuron
physiology, neurotransmission, blood-brain barrier integrity, motor
and sensory pathway function, intracranial pressure dynamics,
cerebral autoregulation, neurodegeneration, and neurotrauma. The
exam emphasizes real-world clinical application and decision-
making through multiple-choice and scenario-based items
requiring mechanistic reasoning. Candidates must demonstrate
competence in correlating cellular dysfunction with clinical
manifestations and evidence-based management across diverse
neurological disorders.
SECTION ONE: QUESTIONS 1–200
1. Which neurotransmitter is primarily deficient in the substantia
nigra in Parkinson's disease?
A. Serotonin
B. Dopamine
,C. Acetylcholine
D. GABA
🟢 B. Dopamine
🔴 RATIONALE: Parkinson's disease is characterized by
degeneration of dopamine-producing neurons in the substantia
nigra pars compacta, leading to striatal dopamine depletion and
motor dysfunction.
2. A patient reports a sudden "worst headache of my life" with
neck stiffness. Which condition is most likely?
A. Ischemic stroke
B. Subarachnoid hemorrhage
C. Epidural hematoma
D. Tension headache
🟢 B. Subarachnoid hemorrhage
🔴 RATIONALE: A thunderclap headache with meningeal signs is
classic for subarachnoid hemorrhage, often from a ruptured
aneurysm.
3. In the Gate Control Theory, which fibers inhibit pain
transmission by "closing the gate"?
A. C fibers
B. A-delta fibers
C. A-beta fibers
D. Sympathetic fibers
🟢 C. A-beta fibers
🔴 RATIONALE: Large-diameter A-beta fibers carry non-
nociceptive input and inhibit pain transmission at the spinal gate,
,which is the basis for using vibration or massage for pain relief.
4. Which type of cerebral edema results from blood-brain
barrier breakdown after stroke or tumor?
A. Cytotoxic edema
B. Vasogenic edema
C. Interstitial edema
D. Osmotic edema
🟢 B. Vasogenic edema
🔴 RATIONALE: Vasogenic edema is caused by increased
permeability of the capillary endothelium after BBB injury,
allowing protein-rich fluid into the extracellular space.
5. What is the hallmark protein pathology of Alzheimer's
disease?
A. Dopaminergic depletion
B. Demyelination of central axons
C. Amyloid plaques and neurofibrillary tangles
D. Prion protein accumulation
🟢 C. Amyloid plaques and neurofibrillary tangles
🔴 RATIONALE: Alzheimer's disease is characterized by
extracellular amyloid-beta plaques and intracellular
hyperphosphorylated tau neurofibrillary tangles.
6. A patient with a T6 spinal cord injury develops BP 200/110
mm Hg, bradycardia, and severe headache. What is the priority
concern?
A. Spinal shock
B. Neurogenic shock
, C. Autonomic dysreflexia
D. Cerebral concussion
🟢 C. Autonomic dysreflexia
🔴 RATIONALE: Autonomic dysreflexia is a life-threatening
emergency in injuries at T6 or above, triggered by noxious stimuli
below the lesion, causing unopposed sympathetic outflow and
severe hypertension.
7. Multiple sclerosis is characterized by which
pathophysiological process?
A. Loss of lower motor neurons
B. Depletion of acetylcholine at the neuromuscular junction
C. Demyelination of central nervous system axons
D. Excessive cerebrospinal fluid production
🟢 C. Demyelination of central nervous system axons
🔴 RATIONALE: MS is an autoimmune inflammatory disease in
which autoreactive T and B cells attack the myelin sheath of CNS
neurons, causing demyelination and axonal injury.
8. Which phase of a seizure involves rigid muscle contraction
with excessive muscle tone?
A. Clonic phase
B. Tonic phase
C. Postictal phase
D. Aura phase
🟢 B. Tonic phase
🔴 RATIONALE: The tonic phase is characterized by rigid muscle
contraction; the clonic phase involves alternating contraction and
CORRECT ANSWERS (VERIFIED ANSWERS) PLUS RATIONALES
2026 Q&A | INSTANT DOWNLOAD PDF.
Core Domains
Neuron Physiology and Neurotransmission
Blood-Brain Barrier and Cerebral Edema
Motor and Sensory Pathways
Intracranial Pressure Dynamics and Cerebral Autoregulation
Neurodegenerative Disorders
Neurotrauma and Spinal Cord Injury
Seizure Disorders and Headaches
Cerebrovascular Disorders and Infections
Introduction
The NR507 Advanced Pathophysiology Final Examination evaluates
graduate-level integration of pathophysiological mechanisms
across neurological systems for Weeks 5–8. It assesses neuron
physiology, neurotransmission, blood-brain barrier integrity, motor
and sensory pathway function, intracranial pressure dynamics,
cerebral autoregulation, neurodegeneration, and neurotrauma. The
exam emphasizes real-world clinical application and decision-
making through multiple-choice and scenario-based items
requiring mechanistic reasoning. Candidates must demonstrate
competence in correlating cellular dysfunction with clinical
manifestations and evidence-based management across diverse
neurological disorders.
SECTION ONE: QUESTIONS 1–200
1. Which neurotransmitter is primarily deficient in the substantia
nigra in Parkinson's disease?
A. Serotonin
B. Dopamine
,C. Acetylcholine
D. GABA
🟢 B. Dopamine
🔴 RATIONALE: Parkinson's disease is characterized by
degeneration of dopamine-producing neurons in the substantia
nigra pars compacta, leading to striatal dopamine depletion and
motor dysfunction.
2. A patient reports a sudden "worst headache of my life" with
neck stiffness. Which condition is most likely?
A. Ischemic stroke
B. Subarachnoid hemorrhage
C. Epidural hematoma
D. Tension headache
🟢 B. Subarachnoid hemorrhage
🔴 RATIONALE: A thunderclap headache with meningeal signs is
classic for subarachnoid hemorrhage, often from a ruptured
aneurysm.
3. In the Gate Control Theory, which fibers inhibit pain
transmission by "closing the gate"?
A. C fibers
B. A-delta fibers
C. A-beta fibers
D. Sympathetic fibers
🟢 C. A-beta fibers
🔴 RATIONALE: Large-diameter A-beta fibers carry non-
nociceptive input and inhibit pain transmission at the spinal gate,
,which is the basis for using vibration or massage for pain relief.
4. Which type of cerebral edema results from blood-brain
barrier breakdown after stroke or tumor?
A. Cytotoxic edema
B. Vasogenic edema
C. Interstitial edema
D. Osmotic edema
🟢 B. Vasogenic edema
🔴 RATIONALE: Vasogenic edema is caused by increased
permeability of the capillary endothelium after BBB injury,
allowing protein-rich fluid into the extracellular space.
5. What is the hallmark protein pathology of Alzheimer's
disease?
A. Dopaminergic depletion
B. Demyelination of central axons
C. Amyloid plaques and neurofibrillary tangles
D. Prion protein accumulation
🟢 C. Amyloid plaques and neurofibrillary tangles
🔴 RATIONALE: Alzheimer's disease is characterized by
extracellular amyloid-beta plaques and intracellular
hyperphosphorylated tau neurofibrillary tangles.
6. A patient with a T6 spinal cord injury develops BP 200/110
mm Hg, bradycardia, and severe headache. What is the priority
concern?
A. Spinal shock
B. Neurogenic shock
, C. Autonomic dysreflexia
D. Cerebral concussion
🟢 C. Autonomic dysreflexia
🔴 RATIONALE: Autonomic dysreflexia is a life-threatening
emergency in injuries at T6 or above, triggered by noxious stimuli
below the lesion, causing unopposed sympathetic outflow and
severe hypertension.
7. Multiple sclerosis is characterized by which
pathophysiological process?
A. Loss of lower motor neurons
B. Depletion of acetylcholine at the neuromuscular junction
C. Demyelination of central nervous system axons
D. Excessive cerebrospinal fluid production
🟢 C. Demyelination of central nervous system axons
🔴 RATIONALE: MS is an autoimmune inflammatory disease in
which autoreactive T and B cells attack the myelin sheath of CNS
neurons, causing demyelination and axonal injury.
8. Which phase of a seizure involves rigid muscle contraction
with excessive muscle tone?
A. Clonic phase
B. Tonic phase
C. Postictal phase
D. Aura phase
🟢 B. Tonic phase
🔴 RATIONALE: The tonic phase is characterized by rigid muscle
contraction; the clonic phase involves alternating contraction and
