This chapter describes the skin and its appendages.
It explains the structure and function of the layers of skin (dermis and epidermis)
and the hair, nails, and sweat glands (objectives 1-5).
This chapter also explains how the skin helps regulate body temperature and
how it responds to environmental factors, such as sunlight and injury (objectives
6 and 7).
Study of the integumentary system is essential
to understanding how the body controls interaction between the internal and