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Histology
Epithelium
Question | Answer |
---|---|
name the four basic tissue types | epithelium, connective tissue, muscle, nervous tissue |
body coverings and linings are known as... | epithelium |
this type of tissue can generate an action potential | nervous tissue and muscle |
the epithelium is separated from underlying tissues by this structure | basement membrane |
name four characteristics of epithelium | polarity, cellularity, basement membrane, avascular |
name some extracellular components | ground substance (glycosamines, proteoglycans, glycoproteins), fibers, extracellular fluid |
name two types of fibers | elastic and collagen |
name tye five types of collagen | type 1,2,3,4 and 7 |
this type of epithelium is good for diffusion | squamous cells |
this type of epithelium is found only in the urinary system | transitional epithelium |
this type of epithelium is good for secretion and absorption | stratified cuboidal |
this type of surface modification is motile, and transports substances along the epithelium surface | cilia |
this type of surface modification is very hard to see and appears as "fingers" on the apical surface and is non motile | microvilli |
this type of surface modification are long microvilli that are non motile and are found in the epididymis, ductus deferans, inner ear | stereocilia |
this is an epithelial modification which is a unicellular gland that produces mucus | goblet cell |
this is a special type of epithelium that is simple squamous and found in the linings inside of blood vessels and the heart | endothelium |
this is a special type of epithelium tat is simple squamous and found in the linings of body cavities | mesothelium |
these are secretory cells that arise as ingrowths of the epithelium | glandular epithelium |
a tumor derived from epithelial tissue | carcinoma |
increase in cell number | hyperplasia |
reversible change from one tissue type | metaplasia |
irreversible change from one tissue type | dysplasia |