Which term describes reaching widespread areas of the body?

• A. Systemic Effect
• B. Allergy
• C. Anaphylaxis
• D. Idiosyncrasy

Answer: (A)

Systemic describes effects that travel through the bloodstream to affect many parts of the body. When a medication or toxin is absorbed and distributed via circulation, its actions aren’t limited to one local site but are felt across multiple tissues and organs. That wide-reaching influence is what a systemic effect means.

Allergy refers to an immune reaction to a substance, which can be localized or systemic but describes the immune response rather than the distribution of the substance itself. Anaphylaxis is a severe, life-threatening allergic reaction that can involve multiple body systems, but again it emphasizes the reaction’s severity rather than the general idea of widespread distribution. Idiosyncrasy means an unusual, individual-specific reaction to a drug that isn’t dose-related, not the general spread throughout the body.