The hair and follicle are part of which skin structures?

• A. Epidermis and pilosebaceous unit
• B. Dermis
• C. Hypodermis
• D. Stratum corneum

Answer: (A)

The hair and its follicle belong to the epidermal context together with the pilosebaceous unit. Hair grows from epidermal cells and the hair shaft emerges through the surface via the follicle, which is part of the pilosebaceous unit that also includes the sebaceous gland and arrector pili muscle. The epidermis provides the surface through which the hair exits, while the pilosebaceous unit describes the hair follicle system itself. The other layers—dermis, hypodermis, and the stratum corneum—don’t capture this combined structure that houses hair growth and its associated components.