Human skin color is determined by the interaction of melanin, carotene and hemoglobin. Storage of water, fat, glucose and vitamin D is also a function of the integumentary system, according to the AAD.
1 ExcelTest HSPT Courses offer an intensive program with 12 classes of 3 hours each over 4 - 5 weeks. 2  ExcelTest Courses offer unique and extremely effective strategies not taught anywhere else, by highly experienced, dynamic instructors.
Program is 96 weeks in length. The total number of program hours is 2,728 at all campuses except Las Vegas. Las Vegas campus program hours total 2,773. The Las Vegas program includes one additional 3 credit class presented online or on-ground (HST 205 Nevada History and US Constitution). Graduates receive an Associate of Applied Science degree.