Wound healing is a process that starts with the application of pressure to the wound and progresses through the following stages: 1. Pre-Wound Healing: This stage is responsible for cleaning the wound and preparing the wound for healing. This includes removing any debris, dead skin, and bacteria. 2. Wound Healing: This stage is when the wound starts to close and begins to take in nutrients and oxygen. The wound will also start to produce fluid and pus. 3. Post-Wound Healing: This stage is when the wound is healed and begins to shrink. The wound will also stop producing fluid and pus.