cfd5bd82_r_chemical_names_and_functions__Functions
[Vitamins] A [Chemical Names] Beta-carotene; Retinol [Functions] 
to promote good vision and to form and maintain healthy teeth, skeletal and soft tissue, mucous membranes, and skin. Vitamin A acts as an antioxidant and is a fat-soluble vitamin, which is derived from two sources: preformed retinoids and provitamin carotenoids
vitamins, their chemical names and functions
Functions