What type of injury is known as an abrasion?

An abrasion refers to a type of injury characterized by the loss of the outer layer of skin, often resulting from the skin being scraped against a rough surface. This injury is typically superficial, affecting only the epidermis, which is the top layer of the skin. Abrasions can occur from various incidents, such as falls or road rash when sliding on pavement.

In contrast, the other options describe different types of injuries: an exit wound from a gunshot typically involves deeper tissue damage and can be life-threatening; a deep laceration from a sharp object indicates a cut that penetrates through deeper layers of skin and tissue; and a superficial puncture wound involves a small hole created by a sharp object but does not involve scraping. Therefore, the choice that describes an abrasion accurately captures the essence of this injury type.