First Aid for Corrections Officers Practice Test 2026 - Free First Aid Practice Questions and Study Guide

A bruise, also known as a contusion, is categorized as a closed, discolored injury because it occurs beneath the skin's surface due to damage to blood vessels. The impact causes blood to leak into the surrounding tissue, leading to the characteristic discoloration that ranges from red to purple or blue. This type of injury does not disrupt the integrity of the skin; therefore, it is classified as "closed." In contrast, the other choices involve disruptions of the skin's surface: an open wound exposes underlying tissues; a burn injury damages skin through heat, chemicals, or radiation; and a puncture wound results from a sharp object piercing the skin. Understanding these distinctions is crucial for accurately assessing and providing appropriate first aid in various situations.