The term WOUND REMNANT is composed of two words, SCAB and SCAR. A SCAB is a protective crust that forms over a wound to protect it from infection. It is usually made up of dried blood and other bodily fluids. A SCAR is a permanent mark left on the skin after a wound has healed. It is caused by the body's natural healing process and can be either raised or flat. Both scabs and scars are reminders of a wound that has been inflicted.