Soft tissue

Describe the characteristics of first, second and third degree burns. First degree: epidermal damage; redness; minor pain ? Second degree: blisters; some dermal damage; pain; regeneration possible ? Third degree: dermal layer destroyed; no pain b/c nerve endings destroyed; requires grafting b/c regeneration impossible ? What skin layer provides the main defense against bacteria and injury (book 155)? Stratum corneum (lots of layers and keratinized) What is another name for an outward thickening of the stratum corneum (horny layer) of the skin (book 152)? Callus (from persistent friction which increases cell production) ? Which layer of epidermal cells is mitotic? Stratum basale (germinativum) where new keratinocytes are being formed