the skin

• Epidermis


  Superficial part of the skin, stratified epithelium whose cells become flattened as they mature and rise to the surface
• Dermis


  Deep part of the skin, composed of dense connective tissue containing many blood vessels, lymphatic vessels, and nerves
• Dermis


  Connected to underlying deep fascia or bones by the superficial fascia or subcutaneous tissue
• Nails


  Keratinized plates on the dorsal surfaces of the tips of the fingers and toes, the proximal edge is the root of the nail
• Hair


  Grows out of follicles, which are invaginations of the epidermis into the dermis
• Hair follicles


  • Lie in the skin surface
  • Hair bulbs penetrate deeper part of the dermis
• Hair Papilla


  Vascular connective tissue that occupies the concavity of the hair bulb
• Arrector Pili


  A band of smooth muscle that connects the undersurface of the follicle to the superficial part of the dermis
• Sebaceous Glands


  An exocrine gland that opens into a hair follicle to secrete an oily or waxy matter called sebum
• Sebum


  An oily material that helps preserve the flexibility of the emerging hair as well as oils the surface epidermis around the mouth of the follicle
• Sweat Glands


  Long, spiral, tubular glands distributed over the surface of the body, extend through the full thickness of dermis, and their extremities may lie in the superficial fascia
• Superficial Fascia (subcutaneous tissues)


  A mixture of loose areolar and adipose tissue that unites the dermis of the skin to the underlying deep fascia
• Deep Fascia


  A membranous layer of connective tissue that protects and secures muscles and other deep structures
• Two parts of skin : Epidermis and Dermis
• Two types of Fascia: Superficial Fascia (subcutaneous tissues) and Deep Fascia