Which component of the integumentary system includes hair, nails, and exocrine glands?

• A. Hair, Nails, Exocrine glands
• B. Cutaneous membrane
• C. Epidermis and Dermis
• D. Subcutaneous fat

Answer: (A)

The main idea is recognizing what the integumentary system includes beyond just the skin itself. The skin comes with accessory structures that arise from it and perform specialized tasks—hair, nails, and exocrine glands (such as sweat and sebaceous glands). These are all part of the integumentary system because they are derived from epidermal tissue and associated with the skin’s functions.

The cutaneous membrane refers to the skin proper, the epidermis plus the underlying dermis, and does not explicitly enumerate these accessory structures. Subcutaneous fat lies beneath the dermis and is not considered part of the integumentary system itself. So the option that lists hair, nails, and exocrine glands best captures the complete set of components traditionally grouped under the integumentary system.