Porth’s Pathophysiology:
Concepts of Altered Health
States 11th Edition Test Bank |
MCQs, Answers & Rationales
Guaranteed Pass (GRADED
A+)
1. Which cellular adaptation is characterized by an increase in the
size of existing cells, resulting in enlargement of an organ?
A. Hyperplasia
B. Metaplasia
C. Hypertrophy
D. Dysplasia
Answer: C. Hypertrophy
Rationale: Hypertrophy is an increase in cell size that leads to
enlargement of tissues or organs, commonly seen in skeletal muscle after
exercise.
2. Which electrolyte imbalance is most likely to cause cardiac
dysrhythmias?
A. Hypernatremia
B. Hypokalemia
C. Hypercalcemia
D. Hypomagnesemia
,Answer: B. Hypokalemia
Rationale: Potassium plays a critical role in cardiac conduction. Low
potassium levels increase the risk of arrhythmias and ECG changes.
3. A patient with chronic hypoxemia is most likely to develop which
compensatory response?
A. Decreased erythropoietin production
B. Polycythemia
C. Leukopenia
D. Thrombocytopenia
Answer: B. Polycythemia
Rationale: Chronic hypoxemia stimulates erythropoietin release,
increasing red blood cell production to improve oxygen-carrying
capacity.
4. Which inflammatory mediator is primarily responsible for
vasodilation during acute inflammation?
A. Histamine
B. Insulin
C. Albumin
D. Hemoglobin
Answer: A. Histamine
Rationale: Histamine released from mast cells causes vasodilation and
increased capillary permeability during the inflammatory response.
5. Which condition is characterized by autoimmune destruction of
pancreatic beta cells?
A. Type 2 diabetes mellitus
B. Metabolic syndrome
,C. Type 1 diabetes mellitus
D. Gestational diabetes
Answer: C. Type 1 diabetes mellitus
Rationale: Type 1 diabetes results from autoimmune destruction of
insulin-producing beta cells, leading to absolute insulin deficiency.
6. A patient with left-sided heart failure commonly develops which
manifestation?
A. Hepatomegaly
B. Peripheral edema
C. Pulmonary congestion
D. Ascites
Answer: C. Pulmonary congestion
Rationale: Left ventricular dysfunction causes blood to back up into the
pulmonary circulation, resulting in congestion and dyspnea.
7. Which acid-base imbalance is commonly associated with
prolonged vomiting?
A. Respiratory acidosis
B. Metabolic acidosis
C. Respiratory alkalosis
D. Metabolic alkalosis
Answer: D. Metabolic alkalosis
Rationale: Vomiting leads to loss of gastric acid (hydrochloric acid),
causing an increase in blood bicarbonate levels and metabolic alkalosis.
8. Which laboratory finding is most indicative of iron-deficiency
anemia?
, A. Elevated hemoglobin
B. Increased ferritin levels
C. Low serum ferritin
D. Elevated hematocrit
Answer: C. Low serum ferritin
Rationale: Ferritin reflects iron stores, and low ferritin is a hallmark
finding in iron-deficiency anemia.
9. Which process occurs when neutrophils move from the
bloodstream into injured tissue?
A. Apoptosis
B. Chemotaxis
C. Diapedesis
D. Hemostasis
Answer: C. Diapedesis
Rationale: Diapedesis is the movement of white blood cells through
capillary walls into affected tissues during inflammation.
10. The most common cause of chronic kidney disease is:
A. Acute glomerulonephritis
B. Hypertension and diabetes mellitus
C. Renal trauma
D. Kidney stones
Answer: B. Hypertension and diabetes mellitus
Rationale: Diabetes and hypertension are the leading causes of chronic
kidney disease due to progressive damage to renal blood vessels and
nephrons.
Concepts of Altered Health
States 11th Edition Test Bank |
MCQs, Answers & Rationales
Guaranteed Pass (GRADED
A+)
1. Which cellular adaptation is characterized by an increase in the
size of existing cells, resulting in enlargement of an organ?
A. Hyperplasia
B. Metaplasia
C. Hypertrophy
D. Dysplasia
Answer: C. Hypertrophy
Rationale: Hypertrophy is an increase in cell size that leads to
enlargement of tissues or organs, commonly seen in skeletal muscle after
exercise.
2. Which electrolyte imbalance is most likely to cause cardiac
dysrhythmias?
A. Hypernatremia
B. Hypokalemia
C. Hypercalcemia
D. Hypomagnesemia
,Answer: B. Hypokalemia
Rationale: Potassium plays a critical role in cardiac conduction. Low
potassium levels increase the risk of arrhythmias and ECG changes.
3. A patient with chronic hypoxemia is most likely to develop which
compensatory response?
A. Decreased erythropoietin production
B. Polycythemia
C. Leukopenia
D. Thrombocytopenia
Answer: B. Polycythemia
Rationale: Chronic hypoxemia stimulates erythropoietin release,
increasing red blood cell production to improve oxygen-carrying
capacity.
4. Which inflammatory mediator is primarily responsible for
vasodilation during acute inflammation?
A. Histamine
B. Insulin
C. Albumin
D. Hemoglobin
Answer: A. Histamine
Rationale: Histamine released from mast cells causes vasodilation and
increased capillary permeability during the inflammatory response.
5. Which condition is characterized by autoimmune destruction of
pancreatic beta cells?
A. Type 2 diabetes mellitus
B. Metabolic syndrome
,C. Type 1 diabetes mellitus
D. Gestational diabetes
Answer: C. Type 1 diabetes mellitus
Rationale: Type 1 diabetes results from autoimmune destruction of
insulin-producing beta cells, leading to absolute insulin deficiency.
6. A patient with left-sided heart failure commonly develops which
manifestation?
A. Hepatomegaly
B. Peripheral edema
C. Pulmonary congestion
D. Ascites
Answer: C. Pulmonary congestion
Rationale: Left ventricular dysfunction causes blood to back up into the
pulmonary circulation, resulting in congestion and dyspnea.
7. Which acid-base imbalance is commonly associated with
prolonged vomiting?
A. Respiratory acidosis
B. Metabolic acidosis
C. Respiratory alkalosis
D. Metabolic alkalosis
Answer: D. Metabolic alkalosis
Rationale: Vomiting leads to loss of gastric acid (hydrochloric acid),
causing an increase in blood bicarbonate levels and metabolic alkalosis.
8. Which laboratory finding is most indicative of iron-deficiency
anemia?
, A. Elevated hemoglobin
B. Increased ferritin levels
C. Low serum ferritin
D. Elevated hematocrit
Answer: C. Low serum ferritin
Rationale: Ferritin reflects iron stores, and low ferritin is a hallmark
finding in iron-deficiency anemia.
9. Which process occurs when neutrophils move from the
bloodstream into injured tissue?
A. Apoptosis
B. Chemotaxis
C. Diapedesis
D. Hemostasis
Answer: C. Diapedesis
Rationale: Diapedesis is the movement of white blood cells through
capillary walls into affected tissues during inflammation.
10. The most common cause of chronic kidney disease is:
A. Acute glomerulonephritis
B. Hypertension and diabetes mellitus
C. Renal trauma
D. Kidney stones
Answer: B. Hypertension and diabetes mellitus
Rationale: Diabetes and hypertension are the leading causes of chronic
kidney disease due to progressive damage to renal blood vessels and
nephrons.
