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Alexandra Bolanos

Anatomy Weeks 1-5

TermDefinition
stratum basale is a single layer of columnar cells. Only the cells in this deepest stratum of the epithelium undergo mitosis.
stratum spinosum “spiny layer” of the epidermis. irregularly shaped cells with very prominent intercellular bridges, or desmosomes.
Stratum granulosum process of surface keratin formation begins. filled with intensely staining granules called keratohyalin. cells are packed very tightly together, much like soap bubbles
stratum lucidum "clear layer" keratinocytes are very flat, closely packed, and clear. Typically, nuclei are absent and the cell outlines are now indistinct. dying cells are filled with a substance called eleidin, later transforms to keratin
stratum corneum “horny layer” most superficial layer of the epidermis. thin squamous (flat) cells, they are dead and continually being shed and replaced
keratinization process by which cells in this layer are formed from cells in deeper layers of the epidermis and then filled with keratin and moved to the surface
dermoepidermal junction (DEJ) basement membrane, made up of special fibrous elements and a unique polysaccharide gel that strongly cement the superficial epidermis to the dermis.
Plasma membrane Phospholipid bilayer reinforced with cholesterol and embedded with proteins and other organic molecules
Golgi apparatus Stack of flattened sacs (cisternae) surrounded by vesicles. makes carbohydrate, combines it with protein, and packages the product as glycoprotein.
Lysosomes Tiny membranous bags containing enzymes. autophagy and ingested particles; a cell’s “digestive system”
Created by: bolanosa
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