Nursing practice questions with comprehensive rationales
NurseDive Free Nursing Practice Question
Potassium is responsible for:
A. building muscle mass
Building muscle mass: Protein intake and exercise influence muscle building, not potassium directly.
B. maintaining blood glucose levels
Maintaining blood glucose levels: Insulin and glucagon regulate blood glucose, not potassium.
C. neuromuscular and cardiac function
Neuromuscular and cardiac function: Potassium is essential for nerve transmission and heart muscle contraction.
D. building bone structure and strength
Building bone structure and strength: Calcium and phosphorus are key for bone health.
This question is an excerpt from Nurse Dive's nursing test bank - ATI anatomy and physiology proctored exam. Take the full exam now
Full Explanation
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.
Similar Questions
The normal proportion of body water in an adult is which percentage of body weight?
A. 75-95%
75–95%: This range is too high for adults; it applies more to infants.
B. 50-70%
50–70%: Adult body water typically comprises about 50–70% of total body weight.
C. greater than 80%
Greater than 80%: This is excessive for an adult body water percentage.
D. 30-40%
30–40%: This is too low for average adults.
Full Explanation
A. 75–95%: This range is too high for adults; it applies more to infants.
B. 50–70%: Adult body water typically comprises about 50–70% of total body weight.
C. Greater than 80%: This is excessive for an adult body water percentage.
D. 30–40%: This is too low for average adults.
The most abundant anion in plasma membranes is:
A. phosphate
Phosphate: Phosphate is mainly found intracellularly.
B. potassium
Potassium: Potassium is a cation, not an anion.
C. calcium
Calcium: Calcium is a cation.
D. chloride
Chloride: Chloride is the most abundant extracellular anion and important in fluid balance.
Full Explanation
A. Phosphate: Phosphate is mainly found intracellularly.
B. Potassium: Potassium is a cation, not an anion.
C. Calcium: Calcium is a cation.
D. Chloride: Chloride is the most abundant extracellular anion and important in fluid balance.
The major route of excretion of all electrolytes from the body is via the:
A. skin
Skin: Some electrolytes are lost via sweat, but not the major route.
B. lungs
Lungs: Lungs excrete CO₂ but not most electrolytes.
C. rectum
Rectum: Some are excreted via feces, but the amount is minimal.
D. kidney
Kidney: The kidneys regulate and excrete electrolytes such as sodium, potassium, and calcium.
Full Explanation
A. Skin: Some electrolytes are lost via sweat, but not the major route.
B. Lungs: Lungs excrete CO₂ but not most electrolytes.
C. Rectum: Some are excreted via feces, but the amount is minimal.
D. Kidney: The kidneys regulate and excrete electrolytes such as sodium, potassium, and calcium.