In medicine, a<unk>  is a type of physical trauma<unk> here in the skin is torn, cut or punctured (an open<unk> , or<unk> here blunt force trauma causes a contusion (a closed<unk> . In pathology, it specifically refers to a sharp injury<unk> hich damages the dermis of the skin.
Wound
Tissue 
Coagulation
Biomedical tissue
Fluid compartments
Skin appendage
Hair
Human body