What type of wound is caused by a sharp object like a knife?

An incision is a type of wound that results from a sharp object slicing through the skin and underlying tissues. This type of wound is characterized by clean, well-defined edges and typically occurs with instruments like knives or scalpels. Incisions often have a linear shape, and because they are created by a sharp object, they tend to be more significant in terms of depth than other types of wounds.

In contrast to incisions, abrasions are superficial injuries caused by scraping against a rough surface, resulting in the removal of the top layer of skin. Lacerations involve tearing of the skin and tissue, which can result in irregular and jagged edges. Puncture wounds occur when a pointed object penetrates the skin, like a nail or needle, which can create deep but narrow wounds. Therefore, when considering the distinct characteristics of these wounds, an incision specifically refers to those made by sharp objects, making it the correct answer.