Faneras are visible structures on the skin, such as nails, hair and even sweat glands. Hair, hair or hair fulfills the function of protection.
Nails protect the hands and feet from external injuries and help to pick up small objects. Sweat glands regulate body temperature if it is very hot. Apocrines produce sweat when they experience an imbalance of hormones. In addition, eccrines usually respond to fear and nerves in addition to the fear and fear of the skin.