Tissue: A group or layer of cells that perform specific functions. For example, muscle tissue is a group of muscle cells.issue: A group or layer of cells that perform specific functions. For example, muscle tissue is a group of muscle cells.
1 The skin is a barrier to the outside world protecting the body from infection, radiation, and extremes of temperature.  There are many types of wounds that can damage the skin including abrasions, lacerations, rupture injuries, punctures, and penetrating wounds.
Most lacerations are minor, and repairable by primary wound closure. Primary closure technique attempt to bring the wound edges together neatly and evenly, stop any bleeding, preserve function of the tissue, prevent infection, restore cosmetic appearance, and promote rapid healing.s a general rule, lacerations on any part of the body may be closed primarily for up to 12 hours following the injury. Facial wounds may be closed primarily up to 72 hours following the injury.