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.
Laceration repair is the act of cleaning, preparing, and closing the wound. Minor lacerations (shallow, small, not bleeding, and clean) may not require medical attention. Antibiotic ointment and a bandage may be all that is needed. However, most lacerations do require repair.