WGU C805 PATHOPHYSIOLOGY (OA) EXAM
HIM/HHS PATHWAY QUESTIONS AND CORRECT VERIFIED
ANSWERS WITH RATIONALES 100% GUARANTEED PASS!!
<LATEST VERSION>
1.
A patient with a long history of gastroesophageal reflux disease develops
replacement of the normal stratified squamous epithelium of the lower esophagus
with columnar epithelium containing intestinal-type cells. Which cellular
adaptation is occurring?
A. Hypertrophy
B. Hyperplasia
C. Metaplasia
D. Dysplasia
Answer: C
Rationale: Metaplasia is a potentially reversible adaptation in which one mature
cell type is replaced by another mature cell type better able to tolerate chronic
stress. Barrett esophagus is a classic example associated with chronic acid
exposure.
,2.
A patient is admitted after a prolonged episode of hypotension. Laboratory
findings indicate reduced tissue perfusion, and affected cells begin to swell. Which
intracellular change most directly contributes to this early cellular injury?
A. Increased ATP production by oxidative phosphorylation
B. Failure of the sodium-potassium pump due to ATP depletion
C. Increased DNA replication caused by excessive oxygen delivery
D. Increased lysosomal membrane stabilization
Answer: B
Rationale: Ischemia reduces oxygen delivery and impairs oxidative
phosphorylation, causing ATP depletion. Loss of ATP impairs energy-dependent
ion pumps, particularly the sodium-potassium pump, allowing sodium and water to
accumulate inside the cell and producing cellular swelling.
3.
Which statement best distinguishes apoptosis from necrosis?
A. Apoptosis always produces extensive surrounding inflammation.
B. Apoptosis results from uncontrolled cellular rupture after severe injury.
C. Apoptosis is an organized form of programmed cell death.
D. Necrosis is a normal mechanism used to remove aging cells.
Answer: C
Rationale: Apoptosis is a regulated process of programmed cell death that allows
unwanted or damaged cells to be eliminated with relatively little surrounding
inflammation. Necrosis generally results from severe injury and is associated with
membrane disruption and inflammation.
,4.
A patient sustains a superficial splinter injury to the forearm. Within minutes, the
site becomes erythematous and warm, followed by localized swelling. Which
mediator is primarily responsible for the early increase in vascular permeability?
A. Histamine
B. Erythropoietin
C. Insulin
D. Albumin
Answer: A
Rationale: Histamine released primarily by mast cells promotes vasodilation and
increases vascular permeability during early acute inflammation. The resulting
blood flow changes and fluid movement contribute to redness, warmth, and
swelling.
5.
A patient with prolonged cigarette exposure has destruction of alveolar walls and
enlarged distal air spaces. The loss of elastic recoil makes exhalation increasingly
difficult. Which condition best matches this pathophysiologic process?
A. Chronic bronchitis
B. Pulmonary emphysema
C. Pleural effusion
D. Pulmonary edema
Answer: B
Rationale: Emphysema is characterized by destruction of alveolar walls,
enlargement of distal air spaces, and loss of elastic recoil. These changes reduce
the ability of the lungs to passively expel air during expiration.
, 6.
A patient reports a daily productive cough for most days over multiple months and
has a long smoking history. Airway examination reveals increased mucus
production associated with enlargement and increased numbers of mucus-secreting
cells. Which process is most characteristic of this disease?
A. Destruction of alveolar septa
B. Thickening of the pericardium
C. Goblet-cell hyperplasia and excessive mucus production
D. Loss of surfactant-producing pneumocytes
Answer: C
Rationale: Chronic bronchitis is associated with chronic airway inflammation and
increased mucus production due in part to enlargement and hyperplasia of mucus-
secreting goblet cells. A persistent productive cough is a classic clinical feature.
7.
A patient presents with fatigue, weight loss, persistent cough, night sweats, and
intermittent low-grade fever. Chest imaging identifies cavitary lesions in the upper
lobes. A lung biopsy demonstrates granulomatous inflammation with central
caseous necrosis. Which disease is most consistent with these findings?
A. Tuberculosis
B. Acute bacterial pneumonia
C. Pulmonary embolism
D. Emphysema
Answer: A
Rationale: Tuberculosis commonly produces granulomatous inflammation with
caseating necrosis. The combination of chronic constitutional symptoms, upper-
lobe involvement, and caseous granulomas is strongly associated with pulmonary
tuberculosis.
HIM/HHS PATHWAY QUESTIONS AND CORRECT VERIFIED
ANSWERS WITH RATIONALES 100% GUARANTEED PASS!!
<LATEST VERSION>
1.
A patient with a long history of gastroesophageal reflux disease develops
replacement of the normal stratified squamous epithelium of the lower esophagus
with columnar epithelium containing intestinal-type cells. Which cellular
adaptation is occurring?
A. Hypertrophy
B. Hyperplasia
C. Metaplasia
D. Dysplasia
Answer: C
Rationale: Metaplasia is a potentially reversible adaptation in which one mature
cell type is replaced by another mature cell type better able to tolerate chronic
stress. Barrett esophagus is a classic example associated with chronic acid
exposure.
,2.
A patient is admitted after a prolonged episode of hypotension. Laboratory
findings indicate reduced tissue perfusion, and affected cells begin to swell. Which
intracellular change most directly contributes to this early cellular injury?
A. Increased ATP production by oxidative phosphorylation
B. Failure of the sodium-potassium pump due to ATP depletion
C. Increased DNA replication caused by excessive oxygen delivery
D. Increased lysosomal membrane stabilization
Answer: B
Rationale: Ischemia reduces oxygen delivery and impairs oxidative
phosphorylation, causing ATP depletion. Loss of ATP impairs energy-dependent
ion pumps, particularly the sodium-potassium pump, allowing sodium and water to
accumulate inside the cell and producing cellular swelling.
3.
Which statement best distinguishes apoptosis from necrosis?
A. Apoptosis always produces extensive surrounding inflammation.
B. Apoptosis results from uncontrolled cellular rupture after severe injury.
C. Apoptosis is an organized form of programmed cell death.
D. Necrosis is a normal mechanism used to remove aging cells.
Answer: C
Rationale: Apoptosis is a regulated process of programmed cell death that allows
unwanted or damaged cells to be eliminated with relatively little surrounding
inflammation. Necrosis generally results from severe injury and is associated with
membrane disruption and inflammation.
,4.
A patient sustains a superficial splinter injury to the forearm. Within minutes, the
site becomes erythematous and warm, followed by localized swelling. Which
mediator is primarily responsible for the early increase in vascular permeability?
A. Histamine
B. Erythropoietin
C. Insulin
D. Albumin
Answer: A
Rationale: Histamine released primarily by mast cells promotes vasodilation and
increases vascular permeability during early acute inflammation. The resulting
blood flow changes and fluid movement contribute to redness, warmth, and
swelling.
5.
A patient with prolonged cigarette exposure has destruction of alveolar walls and
enlarged distal air spaces. The loss of elastic recoil makes exhalation increasingly
difficult. Which condition best matches this pathophysiologic process?
A. Chronic bronchitis
B. Pulmonary emphysema
C. Pleural effusion
D. Pulmonary edema
Answer: B
Rationale: Emphysema is characterized by destruction of alveolar walls,
enlargement of distal air spaces, and loss of elastic recoil. These changes reduce
the ability of the lungs to passively expel air during expiration.
, 6.
A patient reports a daily productive cough for most days over multiple months and
has a long smoking history. Airway examination reveals increased mucus
production associated with enlargement and increased numbers of mucus-secreting
cells. Which process is most characteristic of this disease?
A. Destruction of alveolar septa
B. Thickening of the pericardium
C. Goblet-cell hyperplasia and excessive mucus production
D. Loss of surfactant-producing pneumocytes
Answer: C
Rationale: Chronic bronchitis is associated with chronic airway inflammation and
increased mucus production due in part to enlargement and hyperplasia of mucus-
secreting goblet cells. A persistent productive cough is a classic clinical feature.
7.
A patient presents with fatigue, weight loss, persistent cough, night sweats, and
intermittent low-grade fever. Chest imaging identifies cavitary lesions in the upper
lobes. A lung biopsy demonstrates granulomatous inflammation with central
caseous necrosis. Which disease is most consistent with these findings?
A. Tuberculosis
B. Acute bacterial pneumonia
C. Pulmonary embolism
D. Emphysema
Answer: A
Rationale: Tuberculosis commonly produces granulomatous inflammation with
caseating necrosis. The combination of chronic constitutional symptoms, upper-
lobe involvement, and caseous granulomas is strongly associated with pulmonary
tuberculosis.
