Biology

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

Bone Blood Simple cuboidal epithelium Simple columnar epithelium Bone Nervous Tissue Skeletal muscle Cardiac muscle Cardiac Muscle Loose areolar Dense irregular connective tissue Hyaline cartilage Elastic cartilage Fibro cartilage Dense Irregular connective Tissue Elastic cartilage Smooth muscle Stratified squamous epithelium Loose reticular Simple squamous Dense regular Pseudo stratified columnar fibrocartilage Loose adipose Hyaline cartilage Loose areolar Nervous tissue Loose reticular simple squamous Transitional epthelium Smooth muscle Simple columnar epithelium Stratified squamous simple cuboidal Skeletal muscle loose adipose