| Popis: |
The colour of the skin depends upon melanin, degree of vascularity, haemoglobin oxidized or reduced, presence of carotene and thickness of the startum corneum. Melanin is the most important factor contributing to skin colour. There are three types of melanin: eumelanin responsible for the brown-black colour, pheomelanin responsible for yellow-red colour, and neuromelanin is the black pigment present in nerve cells such as the substantia nigra. Eumelanin and pheomelanin are found in the epidermis. |
