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 Information and Requirements. Online diploma programs for prospective physical therapy aides typically can be completed in six months or less; however, the time frame often depends on how quickly students move through the coursework. Schools may allow students 1-2 years to finish an online program.