Initially prevent organism penetration

Correct Answer: D

Rationale: Dead skin keratinocytes form a physical barrier to prevent penetration.

Correct Answer: D

Rationale: Neutrophils are not typically in healthy tissues, unlike macrophages.

Correct Answer: D

Rationale: Septic shock is characterized by systemic vasodilation leading to hypotension and a compensatory increase in heart rate (tachycardia) to maintain perfusion.

Correct Answer: D

Rationale: Eosinophils are not a major acidic/anionic protein; they are cells with granules containing cationic proteins like major basic protein.

Correct Answer: A

Rationale: The live oral poliovirus vaccine is primarily recommended for children, with adults typically receiving inactivated polio vaccine.