South Dakota Cosmetology Practice Exam

The skin actually has multiple functions, and in this case, the option C, muscle repair, is not one of them. The skin acts as a barrier between the body and the environment, protecting it from harmful elements and pathogens. It also helps regulate body temperature through the production of sweat and oil. The skin does not have the ability to repair muscles, as this function is primarily carried out by the muscular and skeletal systems. Excretion is also a function of the skin, as it eliminates waste products through sweat. Therefore, the other options listed are all functions of the skin except for muscle repair.