Final answer:
An abrasion is a type of skin injury that occurs when the skin is scraped or scratched, and it exposes new layers of skin.
Step-by-step explanation:
A skin abrasion produced by scratching or scraping is known as an abrasion. When the skin is injured by excessive pressure or friction, the top layers of skin are worn away, exposing new skin tissue underneath. This is different from a laceration, which is often a deeper and more irregular tear or cut, or an incision, which is a precise cut typically caused by a sharp object. A contusion, on the other hand, is a bruise caused by a blunt force impact that damages underlying blood vessels without breaking the skin.