A substance that is absorbed by the body and enters the bloodstream and may eventually cause damage to internal organs is described as having what type of effect?

• A. Systemic effect
• B. Local effect
• C. Acute effect
• D. Chronic effect

Answer: (A)

The main idea is how distribution in the body determines where a chemical can cause harm. When a substance is absorbed into the body and enters the bloodstream, it can travel to various organs and tissues, leading to effects that show up throughout the body—that's a systemic effect. This contrasts with a local effect, which happens at the site of contact, such as skin irritation right where the substance touched you. The description—being absorbed, circulating in the blood, and potentially damaging internal organs—fits systemic toxicity because the impact isn’t limited to the exposure site but can involve multiple organs over time. The other terms refer to time course (acute vs chronic) or to effects at the site of exposure, not the body-wide spread through the bloodstream.