5 Written Questions

1. keratinized stratified squamous
2. due mainly to the amount of pigment the melanocytes produce and transfer to keratinocytes.
3. s the portion of the hair deep to the shaft that penetrates into the dermis, and sometimes into the subcutaneous layer.
4. or pili are present on most skin surfaces except the palms, palmar surfaces of the fingers, the soles, and plantar surfaces of the feet.
5. located in axilliary, pubic regions, nipples, bear of male. secret sweat into lumen of hair follicles. sweat is composed of same as eccrine plus lipids and proteins. pheromones. dormant in children become active in puberty. emotional stress.(sexual activity)

5 Matching Questions

1. horripilation
2. merkel cells
3. epithelial root sheath
4. glycolipids
5. skin cancer

1. a waterproofing, block difussion of polar substances
2. b the least numerous of epidermal cells. located in deepest layer of epidermis, where they contact the merkel disk they detect touch sensations
3. c most is induced by exposure to uv radiation from sun.
4. d stimuli: fear, strong emotion, cold environment.
5. e is the internal and external root sheaths.

5 Multiple Choice Questions

1. keratinocytes, melanocytes, langerhans cells, and merkel cells.
   1. epidermis cells
   2. langerhans cells
   3. merkel cells
   4. epidermis
2. are sensitive to pressure located in hypodermis and dermis.
   1. subcutaneous
   2. papillary layer
   3. cyanotic
   4. pacinian corpuscle
3. or full thickness burn destroys the epidermis and subcutaneous layer.
   1. causes of burns
   2. third degree burn
   3. thick skin
   4. symptoms 2 degree burn
4. melanocytes of stratum basale. mole, freckles. rapidly metastasize. high cell division. spread to other tissues. high mortality rate.
   1. melanoma
   2. melanin
   3. keratin
   4. melanocytes
5. immune protection
   1. langerhans cells
   2. dermis layers
   3. subcutaneous
   4. skin cancer

5 True/False Questions

1. langerhans cells → arise from red bone marrow and migrate to the epidermis. they participate in immune responses mounted against microbes by helping other cells to recognize and invade the microbe and destroy it. sensible to uv light.

   True        False

2. types of cancer → destroys some of the skin;s important contributions to homeostasis. protection against microbial invasion and desication and thermoregulation.

   True        False

3. concentric layers of shaft and root → medulla, cortex and cuticle of the hair

   True        False

4. dermis → deeper and ticker connective tissue is portion of it

   True        False

5. carotene → s the portion of the hair deep to the shaft that penetrates into the dermis, and sometimes into the subcutaneous layer.

   True        False