Potassium is responsible for:
building muscle mass
maintaining blood glucose levels
neuromuscular and cardiac function
building bone structure and strength
The Correct Answer is C
A. Building muscle mass: Protein intake and exercise influence muscle building, not potassium directly.
B. Maintaining blood glucose levels: Insulin and glucagon regulate blood glucose, not potassium.
C. Neuromuscular and cardiac function: Potassium is essential for nerve transmission and heart muscle contraction.
D. Building bone structure and strength: Calcium and phosphorus are key for bone health.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. hyperkalemia: Elevated potassium can cause fatal cardiac arrhythmias.
B. hyponatremia: While it can be serious, it typically causes neurologic symptoms and is less immediately life-threatening than hyperkalemia.
C. hypokalemia: Also dangerous but usually less acutely life-threatening than hyperkalemia.
D. hypernatremia: Can cause serious symptoms but not as immediately dangerous to cardiac function.
Correct Answer is A
Explanation
A. calcium: Calcium is the major cation in bones, forming the mineral component (hydroxyapatite) that gives bones their strength.
B. phosphate: Phosphate is an anion, not a cation, though it also contributes to bone structure.
C. potassium: Potassium is a cation but is primarily involved in muscle and nerve function, not bone formation.
D. sodium: Sodium is important for fluid balance and nerve function but plays no major role in bone structure.
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