Try our free nursing testbanks today. click here to join
Teas 7 test, Hesi A2 and Nursing prep
Nursingprepexams LEARN. PREPARE. EXCEL!
  • Home
  • Nursing
  • TEAS
  • HESI
  • Blog
Start Studying Now

Take full exam for free

What is the principal cation of the ECF?

A.

Na+

B.

Ca2+

C.

CL-

D.

K+

Answer and Explanation

The Correct Answer is A

A. Na+: Sodium (Na+) is the principal cation in the extracellular fluid (ECF), which includes interstitial fluid and blood plasma. 

 

B. Ca2+: Calcium (Ca2+) is important in various bodily functions but is not the principal cation in the ECF. Sodium is more predominant in ECF.

 

C. Cl-: Chloride (Cl-) is the principal anion in the ECF, not a cation. Sodium is the principal cation. 

 

D. K+: Potassium (K+) is the principal cation in the intracellular fluid (ICF), not the ECF. Sodium is the principal cation in the ECF.


Free Nursing Test Bank

  1. Free Pharmacology Quiz 1
  2. Free Medical-Surgical Quiz 2
  3. Free Fundamentals Quiz 3
  4. Free Maternal-Newborn Quiz 4
  5. Free Anatomy and Physiology Quiz 5
  6. Free Obstetrics and Pediatrics Quiz 6
  7. Free Fluid and Electrolytes Quiz 7
  8. Free Community Health Quiz 8
  9. Free Promoting Health across the Lifespan Quiz 9
  10. Free Multidimensional Care Quiz 10
Take full exam free

View Related questions

Correct Answer is C

Explanation

A. Lactose; lactase: Lactase is the enzyme that breaks down lactose, not the other way around.

B. Lipases; micelles: Lipases break down lipids (fats) into fatty acids and glycerol, not micelles. Micelles are formed as part of the digestion process but are not the substrate for lipases.

C. Peptidases; proteins: Peptidases (or proteases) break down proteins into smaller peptides and amino acids. This is the correct answer.

D. Lactase; glucose: Lactase breaks down lactose into glucose and galactose, not just glucose.

Correct Answer is A

Explanation

A. K+: Potassium (K+) is the most abundant cation in the intracellular fluid (ICF). This is the correct answer.

B. Ca2+: Calcium (Ca2+) is not the most abundant cation in the ICF; it is found in lower concentrations within cells compared to potassium.

C. Cl-: Chloride (Cl-) is the most abundant anion in the extracellular fluid (ECF), not in the intracellular fluid.

D. Na: Sodium (Na) is the most abundant cation in the extracellular fluid (ECF), not in the intracellular fluid.

Quick Links

Nursing Teas Hesi Blog

Resources

Nursing Test banks Teas Prep Hesi Prep Nursingprepexams Blogs
© Nursingprepexams.com @ 2019 -2026, All Right Reserved.