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What type of tissue is the epidermis primarily made up of?
What purpose does keratin serve in the epidermis?
helps prevent water loss.
What does Carotene provide for the skin?
yellow orange pigment.
What does Melanin provide for the skin?
yellow to black.
What is the order of the layers of the epidermis from the youngest cells to the oldest cells?
basale, spinosum, granulosum, lucidum, and corneum.
List 2 characreristics of the corneum layer in the epidermis.
3/4 of epidermal thinkness & consists of keratin and dead cells.
List 2 characreristics of the lucidum layer in the epidermis.
it's only seen where skin is keratinized & protective waterproof barrier.
List a characreristic of the granulosum layer in the epidermis.
seen filling in damage in repair process.
List a characreristic of the spinosum layer in the epidermis.
cells moving up from the basal layer.
List 2 characreristics of the basale layer in the epidermis.
recieves nutrients & constantly undergoing cell division.
What are the 8 major functions of the integumentary system as a whole?
- 1. protection from mechanical damage
- 2. protection from chemical damage
- 3. protection from microorganisms
- 4. protecion from UV radiation
- 5. control body temperature
- 6. maintain H2O balance
- 7. aids in excretion of metabolic wate released through sweat
- 8. aids in synthesis of vitamins
What are oil glads also called?
What do they secrete?
What are sweat glands also called?
What do they secrete?
Which structure is directly responsible for the growth of the fingernail?
How do you classify body membranes?
by their tissue makeup.
What's the difference of the visceral serosa and the parietal serosa?
- visceral serosa- lines the outside of organs
- parietal serosa- lines the walls of the cavity
What are the 4 signs of skin cancer? (ABCD)
asymmetry, border irregularly, color, and diameter.
Name the 3 major types of skin cancer and describe their appearance.
- basal cell carcinoma- shiny edge with an open sore
- squamous cell carcinoma- raised red bumps with small ulcer
- malignant melanoma- rapidly spreading brown to black patch.
What is the deffinition of a burn?
tissue damage and cell death caused by intense heat, electricity, radiation, or certian chemicals.
What are 4 life threatning results from burns?
- 1. loss of body fluid
- 2. leads to dehydration (can cause shutdown of the kidneys)
- 3. circulatory shock because of low blood volume
- 4. infection
What is the Rule of the Nines used for?
estimate how much fluid is lost by determining the extent of the damage.
Classify the 3 types of burns.
- 1. first degree burn- only the epidermis is damaged
- 2. second degree burn- damage to the epidermis and the upper dermis
- 3. third degree burn- destroy the entire thickness of the skin
What are the requirements for a burn to be classified as critical?
- 2 degree burns over 25% or more of the body
- 3 degree burns over 10% of the body
- 3 degree burns on the hands, feet, or face
Do benign tumors spread to other body ares?
What are the 3 types of epithelial membranes?
- 1. cutaneous
- 2. mucous
- 3. serous