The document summarizes key aspects of the integumentary system including the three layers of the skin, structures and functions of the epidermis and dermis, appendages of the skin like hair and nails, and common skin conditions such as burns and skin cancers. It also covers developmental changes from fetal stages to old age and factors influencing skin color.

2. Figure 5.1 Epidermis Dermis Hypodermis (superficial fascia) Hair root Hair shaft Pore Dermal papillae (papillary layer of dermis) Meissner's corpuscle Free nerve ending Reticular layer of dermis Sebaceous (oil) gland Arrector pili muscle Sensory nerve fiber Eccrine sweat gland Pacinian corpuscle Artery Vein Adipose tissue Hair follicle receptor (root hair plexus) Hair follicle Eccrine sweat gland

9. Hair Follicle Figure 5.5c

17. Burns http://www.healthcentral.com/mhc/top/000030.cfm Source: http://www.healthcentral.com/mhc/top/000030.cfm