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30 Cards in this Set
- Front
- Back
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_____&______ form the integument |
Skin and subcutaneous layer |
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The skin covers an area of? |
2 square meters Or 22 square feet |
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What is the weight of the skin? |
4.5-5kg Or 10-11 lb |
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What produces the pigment Melanin? |
Melanocytes |
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Intraepidermal macrophage cells is another name for? |
Langerhan cells |
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Where does the langerhan cells originate from? |
They arise from the red bone marrow and migrate to the epidermis |
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Which is the least numerous of the epidermal cells. Where are they located? |
Merkel cells Deepest layers of the epidermis |
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Which layer is absent in a thin skin? |
Stratum lucidum |
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Where is the stratum basale located? |
The deepest layer of the epidermis |
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What forms the protein keratin? |
Keratin intermediate filaments |
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The stratum spinosum consists of-? And are arranged in how many layers? |
Numerous Keratinocytes 8-10 layers |
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What is the middle layer of the epidermis? How many layers does it have? |
Stratum granulosum 3-5 layers |
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Stratum lucidum consists of how many layers? |
4-6 layers And it's present in thick skin of areas e.g fingertips, palms and soles |
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Stratum corneum consists of how many layers? |
25-30 layers of flat dead keratinized cells |
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What is a callus? And what causes it? |
A callus is an abnormal thickenings of the stratum corneum. It is caused by exposure of skin to friction. |
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An excessive amount of keratinized cells that shed from the skin of the scalp is known as? |
Dandruff |
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The dermis consists of -&-? |
Collagen and elastic fibres |
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The dermis is thinner in men than in women. Dimples is known as |
Cellulite |
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What are the fixed cells in the dermis |
Fibroblasts |
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What are the wandering cells in the Dermis? |
Macrophages Mast cells Eosinophils Neutrophils |
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What indicates the predominant direction of underlying collagen fibres? |
Tension lines |
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Finger prints are epidermal ridges formed in which month of foeywl development? |
3rd month |
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The two forms of melanin: Pheoemelanin; yellow to -? Eumelanin; - to black |
Red Brown |
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What are the two types of freckles ? |
Ephelides Lentigens |
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Melanocytes synthesize from the amino acid - in the presence of an enzyme called -. In an organ called -? |
Tyrosine Tyrosinase Melanosome |
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- is a yellow-orange pigment? |
Carotene |
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What is Erythema |
Redness of skin Caused by engorgement of capillaries in the Dermis with blood due to skin injury |
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The basal cell carcinoma accounts for how many percent of all skin cancers |
78 percent |
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The squamous cell carcinoma accounts for how many percent of all skin cancers? And where does it arise from? |
20% It arises from the stratum spinosum |
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Malignancy melanoma arise from -? |
Melanocytes |
