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Give the six and describe each of the Overall Functions of the Integumentary system?
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Give the six and describe each of the Overall Functions of the Integumentary system?
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What are the three layers to the skin?
Epidermis, Dermis & Subcutaneous
What tissue is the epidermis?
Stratified squamous epithelia
How many cell layers are in the epidermis?
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Where is the epidermis thickest & Why?
Stratum Lucidum and for protection
Describe the most important layers of the epidermis?
stratum basale (stem cells base layer) :: stratum corneum (water proofing)
Where do you have a fifth layer?)
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What changes occur in a keratinocyte as it progresses from the stratum basale to the stratum corneum?
It dies
How long does it take a keratinocyte to progress through these layers?
About 2 weeks
What are melanocytes
They produce melanin
Where are melanocytes found
Stratum basale
What is melanocytes function?
Protect other cells from UV rays
What cells are found in the two layers to the dermis?
Areolor tissue
What is the superficial layer of the dermis
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How is the superficial layer of the dermis specialized on the palms and soles?
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How does the superficial layer of the dermis change with hydration levels?
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How does the superficial layer of the dermis relate this to edema and dehydration?
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What is the deep layer of the dermis
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What is the tissue type of the deep layer of the dermis?
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What nerve receptors are found in the dermis?
Touch, pain, hot, cold
Name each or give special function of each?
Delete
What other structures are found anchored in the dermis?
Hair sweat oil nail arrector pili muscles
What is another name for the subcutaneous layer?
Hypodermis
What tissue types are located in the subcutaneous layer?
Adipose (fat)
What large structures enter the skin through the subcutaneous layer?
Blood vessels
What are Accessory Structures
Hair, Oil Glands, Sweat glands, Nails
Describe the parts of a hair follicle
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What gives hair its color?
Pigments mostly melanin
What gives hair its texture?
Its shape
How fast does hair grow?
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What is the arrector pili attached to the hair follicle?
The goose bump muscle
What does arrector pili do?
Stand hair up for heat production
Where are sebaceous glands normally located?
Dermis
What is sebum for?
lubrication
What causes blackhead and pimples?
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What are the two types of sudoriferous glands?
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What is the function of sudoriferous(sweat) glands?
elimination of water to reduce temp (back) & communication through smell (Armpit)
Where are they most dense
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What are nails for?
protection
Where are nails formed?
Nail bed
What is the lunula?
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Why are nails pink
Blood supply underneath
What can color tell you?
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What cells produce the pigment of the skin?
melanocytes
How did the activity of Skin Color cells evolve over generations for people that lived in a hot sunny tropical climate
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How did the activity of Skin Color cells evolve over generations for people that lived in a cool, rainy, cloudy climate
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What is the function of melanin?
UV protection
What stimulates melanocyte activity?
Exposure to UV
What do nearby cells do with melanin
Protect DNA
Give symptoms, depth, pain presence, healing time and example of each of the three types of burns?
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Which type may be life threatening
3rd degree most serious
Give 2 reasons why are these 2 burns life threatening?
Infection & ?????
What are characteristics of squamous cell carcinoma
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Growth rate of squamous cell carcinoma
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Treatment of squamous cell carcinoma
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What are characteristics of basal cell carcinoma
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Growth rate of basal cell carcinoma
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Treatment of basal cell carcinoma
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What are characteristics of malignant melanoma
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Growth rate malignant melanoma
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Treatment malignant melanoma
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Describe meaning and importance of ABCD rule?
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Who is at greatest risk for developing carcinoma?
Light skinned people
Which part repairs and basically looks normal?
epidermis
Which part repairs and leaves the scar?
Areolar
How is a scar different from normal tissue?
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What is a keloid?
Overgrowth of collagen
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