Which statement is NOT a primary function of the skin?

Which statement is NOT a primary function of the skin?

• A. Protection
• B. Sensation
• C. Vitamin A production
• D. Temperature regulation

Answer: (C)

The skin’s job is to act as a protective barrier, provide sensory input, and help regulate body temperature, and it also participates in vitamin D production when exposed to sunlight. Vitamin A production is not something the skin does; vitamin A comes from the diet and is processed by other organs, not synthesized by skin cells. The other functions—protection, sensation, and temperature regulation—are clear, primary roles of the integumentary system, with the skin also contributing to vitamin D synthesis. So the statement about vitamin A production doesn’t fit with what the skin actually does.

The skin’s job is to act as a protective barrier, provide sensory input, and help regulate body temperature, and it also participates in vitamin D production when exposed to sunlight. Vitamin A production is not something the skin does; vitamin A comes from the diet and is processed by other organs, not synthesized by skin cells. The other functions—protection, sensation, and temperature regulation—are clear, primary roles of the integumentary system, with the skin also contributing to vitamin D synthesis. So the statement about vitamin A production doesn’t fit with what the skin actually does.