Final answer:
A third-degree burn involves the complete destruction of the skin's epidermis and dermis. It affects the nerve endings and requires medical interventions like debridement and skin grafting for healing.
Step-by-step explanation:
A third-degree burn, also known as a full-thickness burn, is a serious injury that involves the complete destruction of both the epidermis and dermis layers of the skin. Nerve endings and sensory function within the affected area are also compromised, as the damage extends deep enough to destroy these elements. As a result, these burns may not be as painful as less severe burns due to the nerve damage. Third-degree burns can appear white, red, or black, and they require immediate medical attention. Healing is a slow process and generally requires medical interventions such as debridement (removal of dead tissue) or skin grafting. In some cases, if the damage is widespread and severe, amputation may be necessary.