Question

Which one of the following leukocytes are present in the largest proportion in healthy human blood?

• A. Neutrophils
• B. Eosinophils
• C. Basophils
• D. Monocytes

Hint:

Neutrophils are the most abundant type of white blood cell, crucial in defending the body against infections, especially bacterial ones.

Answer 1

The Correct Option is A

Step 1: Understanding the question.
The question asks for the leukocytes present in the largest proportion in healthy human blood. Leukocytes, or white blood cells, are important components of the immune system.
Step 2: Analyzing the options.
- (A) Correct, neutrophils are the most abundant type of white blood cells in healthy human blood, typically comprising 50-70% of the total white blood cell count.
- (B) Incorrect, eosinophils are less common and typically make up around 1-4% of the total white blood cell count.
- (C) Incorrect, basophils are rare, usually accounting for less than 1% of white blood cells.
- (D) Incorrect, monocytes account for about 2-8% of white blood cells, not the largest proportion.
Step 3: Conclusion.
Thus, the correct answer is (A) Neutrophils.