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.
The HSPT is a nationally-recognized private school entrance examination available to students as part of the private school application process. The exam covers: Verbal Skills, Quantitative Skills, Reading Comprehension, Mathematics and Language. The exam typically takes 3 hours to complete with breaks. Back to the top.