In addition to protection (physical and chemical barrier), the skin serves other functions. Which of the following is another vital function of the skin?
A) It converts modified epidermal cholesterol to a vitamin D precursor important to calcium metabolism.
B) It aids in the transport of materials throughout the body.
C) The cells of the epidermis store glucose as glycogen for energy.
D) It absorbs vitamin C so that the skin will not be subject to diseases.
Answer: A) It converts modified epidermal cholesterol to a vitamin D precursor important to calcium metabolism.