Question 1
The nurse is teaching a client about communicable diseases and explains that a portal of entry is:
- A. a vector.
- B. a source, like contaminated water.
- C. food.
- D. the respiratory system.
Show answer and rationale
Correct answer: D — the respiratory system.
The correct answer is 'the respiratory system.' A portal of entry is the path through which a microorganism enters the body. In the case of communicable diseases, the respiratory system can serve as a portal of entry for pathogens such as viruses or bacteria. Choices A, B, and C are incorrect. A 'vector' is an organism that transmits disease, not the entry point for pathogens. Contaminated water or food can act as sources or reservoirs of disease-causing microorganisms, not portals of entry.