Final answer:
The incorrect list that includes a structure not part of the integumentary system is A. sebaceous glands, hair, nails, mammary glands, as mammary glands belong to the reproductive system.
Step-by-step explanation:
The list of structures that is NOT all part of the integumentary system is A. sebaceous glands, hair, nails, mammary glands. While sebaceous glands, hair, and nails are accessory structures of the integumentary system, mammary glands are part of the reproductive system and not the integumentary system. The integumentary system primarily consists of the skin, hair, nails, and accessory structures such as sweat glands and sebaceous glands, which help in homeostasis, protection, and sensing the environment.