Final answer:
A third-degree burn fully extends into the epidermis and dermis, destroying the tissue and affecting the nerve endings and sensory function. These burns are called eschar.
Step-by-step explanation:
A third-degree burn fully extends into the epidermis and dermis, destroying the tissue and affecting the nerve endings and sensory function. These burns are serious and may appear white, red, or black. They are called eschar and require medical attention and will heal slowly without it.