ATI TEAS (Test of Essential Academic Skills) Version 7ScienceMedium
A patient is admitted with a severe bacterial infection. Which of the following white blood cells would most likely show an elevated count in their blood work?
- ALymphocytes
- BBasophils
- CNeutrophils
- DEosinophils
Show answer & explanationAnswer & explanation
Correct answer: C. Neutrophils
Neutrophils are the most abundant type of white blood cell and are the first responders to bacterial infections and inflammation. Their primary role is phagocytosis of bacteria and cellular debris.
Why the other options are wrong
- A. Lymphocytes are primarily involved in viral infections and chronic inflammatory conditions, as well as immune surveillance.
- B. Basophils are involved in allergic reactions and inflammation, releasing histamine and heparin, but are not primary responders to bacterial infections.
- D. Eosinophils are primarily associated with allergic reactions and parasitic infections, not typical bacterial infections.
Neutrophils
A type of white blood cell (leukocyte) that is the first line of defense against bacterial infections and inflammation.
- Most abundant type of leukocyte (40-70% of total WBCs).
- Phagocytize bacteria and cellular debris.
- Contain granules with lytic enzymes and antimicrobial agents.
Memory trick: Never Let Monkeys Eat Bananas (Neutrophils, Lymphocytes, Monocytes, Eosinophils, Basophils)