A nurse is preparing to care for a client after a full thickness chemical burn of the bilateral lower extremities. The nurse is aware that 3rd degree, full thickness burns affect which of the following? (Select all that apply.)

A. Dermal layers: Full-thickness (third-degree) burns destroy both the epidermis and the entire dermis. This results in loss of skin elasticity and protective functions, requiring surgical intervention for healing. B. Muscle layers: Muscle involvement typically indicates a deeper injury, such as a fourth-degree burn. Full-thickness burns do not usually extend beyond the subcutaneous tissue into muscle. C. Epidermal layers: The epidermis is completely destroyed in full-thickness burns, which eliminates the skin's barrier function and increases the risk of fluid loss and infection. D. Bone and ligaments: Bone and ligament damage occurs with extreme heat or electrical burns and is characteristic of fourth-degree burns, not third-degree injuries. E. Subcutaneous layers: Full-thickness burns extend through the dermis into the subcutaneous tissue, damaging fat and connective tissues and impairing temperature regulation and sensation.