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Questions and Answers
Which cell type in the epidermis produces the protective fibrous protein called keratin?
What is the function of the basement membrane zone in the skin?
What is the primary function of the skin?
What is the role of melanocytes in the skin?
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What is the purpose of the Fitzpatrick Scale?
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Which layer of the skin is responsible for regulating body temperature?
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What is the composition of the African American genome, according to genomic analysis?
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What is the role of Langerhans cells in the epidermis?
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What is the name of the layer of basal cells joining the epidermis to the dermis?
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Which layer of the skin contains nerves and blood vessels?
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Which layer of the skin is responsible for scarring and tattooing?
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Which layer of the skin is also known as subcutaneous fat?
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Which layer of the skin contains sweat glands and hair follicles?
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Which type of primary lesion is a flat, non-palpable lesion measuring 1cm?
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Which type of primary lesion is a raised lesion larger than 0.5 cm?
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Which type of primary lesion is a plateau-like lesion larger than 0.5 cm?
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Which type of primary lesion is an elevated lesion containing fluid measuring 0.5 cm?
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Which type of secondary change is a thickened skin with distinct borders?
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Which type of secondary change is a shallow hemorrhagic excavation caused by scratching?
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Study Notes
Skin Structure and Function
- Keratinocytes in the epidermis produce the protective fibrous protein called keratin.
- The basement membrane zone in the skin acts as a barrier between the epidermis and dermis, anchoring the epidermis to the dermis.
- The primary function of the skin is to protect the body from external factors, regulate body temperature, and maintain hydration.
- Melanocytes in the skin produce melanin, which provides skin pigmentation and protects against UV radiation.
Skin Layers
- The stratum basale (basal layer) is responsible for regulating body temperature.
- The dermis contains nerves and blood vessels.
- The dermis is also responsible for scarring and tattooing.
- The hypodermis is also known as subcutaneous fat.
- The dermis contains sweat glands and hair follicles.
Skin Lesions
- A macule is a flat, non-palpable lesion measuring 1cm.
- A papule is a raised lesion larger than 0.5 cm.
- A plaque is a plateau-like lesion larger than 0.5 cm.
- A vesicle is an elevated lesion containing fluid measuring 0.5 cm.
Skin Changes
- Lichenification is a thickened skin with distinct borders.
- An excoriation is a shallow hemorrhagic excavation caused by scratching.
Other
- Langerhans cells in the epidermis function as immune cells, recognizing and processing antigens.
- The dermo-epidermal junction is the layer of basal cells joining the epidermis to the dermis.
- The Fitzpatrick Scale is used to classify skin types based on their response to UV radiation.
- Genomic analysis shows that the African American genome is composed of varying degrees of African, European, and Indigenous American ancestry.
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Description
Test your knowledge of the functions of the skin with this quiz on Dermatology. Learn about the skin's role in protection, regulation of body temperature, sensory perception, and synthesis of Vitamin D.
