Tears are considered to be part of the:
Specific defense
Third line of defense
Second line of defense
Inflammatory response
First line of defense
The Correct Answer is E
A. Specific defense: Tears are non-specific barriers (contain lysozyme, flush pathogens), so this is incorrect.
B. Third line of defense: The third line is adaptive immunity (B and T cells); tears are not part of that.
C. Second line of defense: The second line is internal innate responses (inflammation, phagocytes); tears are an external barrier, so not second line.
D. inflammatory response: Tears are not the inflammatory response-they act before inflammation as a barrier/chemical defense.
E. First line of defense: Tears are part of the first line (physical and chemical barriers) protecting mucous membranes and the eye.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
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Correct Answer is A
Explanation
True: X-rays use ionizing radiation and are ideal for imaging dense structures like bone.
Correct Answer is B
Explanation
A. thrombocytes: Platelets (thrombocytes) are not the primary target of HIV; they may be affected secondarily but are not the cells destroyed by the virus.
B. CD4: HIV infects and progressively depletes CD4⁺ T helper lymphocytes, which leads to immune deficiency.
C. ESR: ESR (erythrocyte sedimentation rate) is a laboratory test/value, not a cell type, so it cannot be destroyed.
D. CD8: CD8⁺ cytotoxic T cells are not the primary cells infected by HIV; they may be functionally affected but HIV primarily targets CD4⁺ T cells.
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