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.
In general, lacerations that require sutures include: Guidelines for Suture Removal. Sutures may need to stay in longer when the laceration is over a joint, or in an area that is under a lot of stress, such as the palm of the hand or sole of the foot.