injuries from blunt forces
- also called a graze or a scratch
- is a superficial (oberfl) injury involving only the epidermis which has been removed by friction (Reibung).
a scratch is linear, as in fingernail scratches.
- a graze involves a wider area, as in abrasions caused by dragging part of the body over a rough surface
- also called a bruise (Quetschung od. blauer Fleck)
- is an injury that occurs when blood vessels (Gefässe) in the skin damaged
- also called a tear (Riss)
- is a wound involving both the dermis and epidermis. It is usually distinguished from penetrating or incised wounds by its irregular edges and relative lack (Mangel) of bleeding