List the 3 layers of the integumentary system

• A. Epidermis, Dermis, Subcutaneous layer
• B. Hypodermis, Dermis, Epidermis
• C. Epidermis, Dermis, Hypodermis
• D. Dermis, Epidermis, Subcutaneous Layer

Answer: (A)

From outermost to innermost, the skin has three layers: the epidermis, the dermis, and the subcutaneous layer. The epidermis acts as a protective outer shield against infection and injury. Beneath it, the dermis carries structures like hair follicles, sweat glands, nerves, and blood vessels, giving skin its strength and elasticity due to collagen and elastin. The deepest layer, the subcutaneous layer (also called the hypodermis), is mainly fat and connective tissue that cushions, insulates, and stores energy. This is why listing epidermis, dermis, and subcutaneous layer matches how the skin is organized and is the best choice. Some options use the term hypodermis instead of subcutaneous layer or mix up the order, but they describe the same three layers with slight terminology or sequencing differences.