5 Written Questions

1. cancers of lymphoid tissues (such as tonsil cancer)
2. deeper, dense irregular ct, & collagen and elastin fibers (strength)
3. the most superficial layer, composed of 15-30 layers of dead keratin-filled cells that can flake off as dandruff or form a callus or corn, serves as a protection again microbes, assisted by sebaceous glands (oil glands), & cells remain at this layer for about 2 weeks before being shed or washed away
4. projects from hair follicle located in the dermis of the skin,
5. made by keratinocytes, provides a waterproofing for the skin

5 Matching Questions

1. SKIN FUNCTIONS: VITAMIN D PRODUCTION
2. STRATUM BASALE
3. CANCER
4. LINES OF CLEAVAGE
5. MELANOMA

1. a the deepest layer. This layer contains stem cells to replace keratinocytes at the epithelial surface. Skin surfaces that lack hair also contain specialized epithelial cells known as Merkel cells. It takes 15-30 days for cells to move from this layer to the stratum corneum
2. b when cells undergo uncontrolled growth and are not regulated by signals involved with controlling the cell cycle, & involve mutations in DNA
3. c follow the bundles of fibers in the skin, cuts parallel to a line of cleavage heal with little scarring while cuts perpendicular to the line of cleavage result in greater scarring
4. d made by cells in the skin upon sun exposure and transported to the liver and kidneys where it is converted to a hormone called calcitriol that regulates calcium and phosphorus metabolism in the body
5. e a malignant tumor of melanocytes, less common than other skin cancers but responsible for most of the deaths, the most dangerous form of skin cancer, & to detect melanomas, remember the ABCDE rule

5 Multiple Choice Questions

1. yellow skin coloring caused by liver problems
   1. DERMIS
   2. JAUNDICE
   3. NAILS
   4. CYANOSIS
2. the deeper and thicker layer of the skin
   1. KERATIN
   2. MELANIN
   3. BURNS
   4. DERMIS
3. form an impermeable barrier to the passage of fluids
   1. THIRD DEGREE BURNS
   2. TIGHT (OCCLUDING) JUNCTIONS
   3. SKIN FUNCTIONS: COOLING
   4. SKIN FUNCTIONS: HEATING
4. fibroblasts form a network of collagen fibers to stabilize the site which forms a framework
   1. KERATIN
   2. DERMIS
   3. MELANIN
   4. REPAIR
5. temperature, touch, and pain
   1. SECOND DEGREE BURNS
   2. SENSORY RECEPTORS
   3. ADENOCARCINOMAS
   4. CANCER CELLS

5 True/False Questions

1. DESMOSOMES → cancers of muscles, connective tissues (such as bone cancer)

   True        False

2. PAPILLARY LAYER → deeper, dense irregular ct, & collagen and elastin fibers (strength)

   True        False

3. SCAR TISSUE → the deeper and thicker layer of the skin

   True        False

4. HAIR SHAFT → the portion that extends beyond the skin

   True        False

5. THIRD DEGREE BURNS → epidermis only is burned, erythemia and brief pain, & minor sunburn can cause 1st degree burns

   True        False