Which statement best describes the function of the acid mantle?

Which statement best describes the function of the acid mantle?

• A. Provides protection from UV radiation, supports microflora, and lubrication
• B. Maintains structural integrity of the dermis
• C. Stores lipids for energy
• D. Produces serotonin for sensation

Answer: (A)

The acid mantle is the thin protective film on the skin’s surface formed by sweat and sebum, giving the skin a slightly acidic pH. That acidity helps keep the environment unfriendly to many pathogens, which supports the growth of beneficial microflora that thrive in a low-pH environment. The film also provides lubrication and helps prevent excessive moisture loss, keeping the skin supple. While there is some overall barrier protection that can reduce irritants and even contribute to shielding against UV exposure, the key idea is that the acid mantle helps protect against microbes, supports healthy microflora, and lubricates the surface. The other statements describe functions of deeper skin structures or different processes entirely.

The acid mantle is the thin protective film on the skin’s surface formed by sweat and sebum, giving the skin a slightly acidic pH. That acidity helps keep the environment unfriendly to many pathogens, which supports the growth of beneficial microflora that thrive in a low-pH environment. The film also provides lubrication and helps prevent excessive moisture loss, keeping the skin supple. While there is some overall barrier protection that can reduce irritants and even contribute to shielding against UV exposure, the key idea is that the acid mantle helps protect against microbes, supports healthy microflora, and lubricates the surface. The other statements describe functions of deeper skin structures or different processes entirely.