Some codes represent errors. Most others simply communicate the status of the connection. Here are brief explanations for the most common status and error codes. The list below are standard HTTP codes. Numbers outside this list are proprietary to the Server or Client that you are using.
The human skin is the outer covering of the body. In humans, it is the largest organ of the integumentary system. The skin has up to seven layers of ectodermal tissue and guards the underlying muscles, bones, ligaments and internal organs. Human skin is similar to that of most other mammals.
An organ itself (your body's largest in terms of both weight and surface area), skin protects against invasive bacteria, regulates body temperature, and picks up information from the stimulation of touch, pressure, pain, heat, and cold.