lab exam
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| epidermis | the outer layer of the kin, is compsed of epithelial tissue
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| dermis | is the connective tissue layer that is firmly attached to teh epidermis by a basmenet membrane, provides the avascular epidermis with nutrientsan connects the epidermis to teh underlying hypodermis
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| hypodermis | is located below the skin and is usually discussed with the skin
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| kertainocytes | the most numerous of the epidermal cells; produces kertain
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| melanocytes | a pigmented cell, loacted between or benath cells of the deepest layer of the epidermis, that synthesizes melanin
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| Langerhans cells | are immune system cells that attack pathogesns that enter the skin
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| Markel cells | are the least abdundant cell type and are found only in the deepest layer of the epidermis
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| stratum basale | a single row of cells attached to the basement membrane, contains stem cells that divide to form nre kertaincoytes
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| stratum spinosum | contains 8 to 10 rows of cells, mainly kertainocytes
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| stratum granulosum | conatins 3 to 5 rows of flattened kertainoyctes that are beggining to die
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| stratum lucidum | conatins 3 to 5 rows of flat, dead keratinocytes
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| stratum corneum | is a very thick layer conatining 25 to 30 or more rows of dead, squamous-shaped kertainoyctes
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| prokaryotes | no nucleus, single cell, own dna
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| eukaryotes | nucleus, has a membrane-bound strcutre called cytoplasm,
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| Gram Stain | differentiates between two bacteria groups
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| Gram Positive Satin | retrain the stain, the stain is purple in color
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| Gram Negative Stain | can be harmful more disease causing, doesn't retrain the stain, red in color
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| Fungi | eukaryotic organism occuring as a single cell (yeast) or a long, branching filament (mold)
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| Strepto | a genus of gram-positive cocci that are anaerobic, non-motile and non-sporeformers. Arranged into four groups, one of which includes the beta-hemoltic pathogenic species
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| eukaryote | an organism whose cells have a true nucleus enveloped by a nuclear membrane
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| prokaryote | an organsim whose cells lack a true nucleus
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| Bacteria forms/shapes | rod form, spherical form, spiral form
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| rod form | is called bacillus
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| rod form come in four different forms | rectangular, club, swollen, chain
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| spherical form comes in five different fomrs | chain, packet, cluster, diplococcus 1, diplococcus 2
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| spiral form comes in three differetn forms | single spiral , corkscrew and flagellum, corkscrew/ no flagellum
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| spherical form | is called coccus
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| spiral form | is called spiral
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| Gram Stain | is often the first step in identifying a bacterium
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| Gram-Positive bacteria | are genreally susceptible to certain antibiotics such as penicillin
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| Gram-Negavtive bacteria | are killed by other antibiotics
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| stratum lucidum | layer is translucent in specimens of fresh skin
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Created by:
Courtneey
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