SYSTEMS & DISEASE MECHANISMS – 40 EXAM-STYLE
QUESTIONS WITH VERIFIED ANSWERS & DETAILED
RATIONALES | NURSING & HEALTH SCIENCES EXAM
PREPARATION
COURSE NAME
Pathophysiology
LEVEL
College / University Level
YEAR
Year 2–3
1. Which electrolyte is primarily responsible for maintaining intracellular
fluid balance?
A. Sodium
B. Chloride
C. Potassium
D. Calcium
Answer C
Potassium is the major intracellular cation and plays a critical role in cellular
function.
, 2. Hyperkalemia refers to:
A. Low potassium levels
B. High potassium levels
C. High sodium levels
D. Low calcium levels
Answer B
Hyperkalemia can cause dangerous cardiac dysrhythmias and muscle weakness.
3. Hyponatremia is defined as:
A. Elevated sodium concentration
B. Reduced sodium concentration
C. Elevated potassium concentration
D. Reduced chloride concentration
Answer B
Hyponatremia may result in neurological symptoms due to cerebral edema.
4. Which acid-base disorder is characterized by decreased blood pH?
A. Alkalosis
B. Acidosis
C. Compensation
D. Homeostasis
Answer B
Acidosis occurs when blood pH falls below the normal range.
5. Respiratory acidosis commonly results from: