According to the descriptions, the dermis

• A. Forms the innermost layer of the skin
• B. Forms the outermost layer of the skin
• C. Keeps the temperature of the body normal range
• D. Provides extra fuel for the body

Answer: (C)

The dermis helps keep the body’s temperature within a normal range through heat regulation with its blood vessels and sweat glands. When the body needs to cool down, vessels in the dermis can dilate to bring heat to the surface, and sweat is produced to evaporate and remove heat. When heat is conserved, these vessels can constrict and sweating decreases, helping maintain stable temperature. The dermis is not the innermost layer (the deepest layer is beneath it), nor the outermost layer (that’s the epidermis). It also doesn’t provide extra fuel for the body—that energy storage happens in the adipose tissue beneath the dermis.