Term
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Definition
| tissue stains more readily with basic dies; materials that are acidic and thus negatively charged, get stained with the positive charged hematoxylin |
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Term
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Definition
| tissues stain better with acid dyes; the material being died is basic bind to negatively charged Eosin! |
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Term
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Definition
| change in color of dye when reacts with certain tissue constituents. |
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Term
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Definition
blue: nucleus, acidic regions of cytoplasm
pink: basic regions of cytoplasm, collagen |
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Term
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Definition
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Term
| Periodic acid-Schiff (PAS) |
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Definition
neutral carbohydrates and glycoproteins stain magenta
used to show glycogen, basement membrane and mucus |
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Term
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Definition
| acidic carbohydrates stain blue |
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Term
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Definition
shows fine structures such as nerves or reticular fibers
stains black |
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Term
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Definition
| stains lipid containing structures black |
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Term
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Definition
nuclei stains dark blue
keratin, muscle and cytoplasm stain red
collagen stains blue |
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Term
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Definition
results in intense coloration of cells and tissues
shows and highlights landmarks |
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Term
| Seven steps of tissue processing? |
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Definition
| Fixation, Decalcification, Dehydration, Clearing (replace alcohol with non polar solvent so that non polar paraffin embedding can stick), Embedding, sectioning,Rehydration |
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Term
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Definition
| light striking oriented molecules rotate and contrast specimen against dark background |
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Term
| phase contrast microscopy |
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Definition
living cells and tissue; dyes not used;
light changing speed and direction as light passes through differnet structures with different refactive indicis. contrast good but resolution bad |
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Term
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Definition
| light rays twoard specimen at angle and those rays that hit specimen are reflected through ocular. used for bacteria. |
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Term
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Definition
| thin transilluminated specimen, requres the use of dyes and thin sections |
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Term
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Definition
| specimen is stained with fluorescent dye followed by uv light. dye shifts wavelenght of uv light and allows certain fluorochrome stained compounds to be visualized |
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Term
| simple squamous epithelia |
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Definition
single layer, flat
includes mesothelium (creates lubricant) and endothelium (lines blood vessels and body cavities and also has clotting factors) |
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Term
| simple cuboidal epithelia |
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Definition
| round nucleus, cube shaped |
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Term
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Definition
nuclei is either in the middle of cell or at the base;
tall elongated nucleus;
gun lining, lubricating function
***the only columnar with nucleus in apex is ameloblasts! |
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Term
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Definition
surface layer of cells its the name for the entire epithelia
if surface is squamous, then the epithelia is named stratified squamous |
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Term
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Definition
| urinary tract, specialized for stretching, empty vs full bladder |
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Term
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Definition
| method of secretion with membrane bound vesicles containing secretory product, fuses with cell membrane and is secreted leaving cell intact |
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Term
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Definition
| loss of apical portion of cytoplasm which encloses the secretory product |
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Term
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Definition
| degeneration and discharge of entire cell (sebacious gland), the whole cell breaks down and everything is released |
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Term
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Definition
| surround narrow lumen; nucleus is rounded at base; cell borders are poorly defined and very indistinct |
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Term
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Definition
| surround wide lumen, nucleus flattened at base of cell, cell boundaries sharply defined |
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Term
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Definition
both serous and mucous cells;
demilune moon shaped-secretes serous products into mucous acinus forming mixed secretion |
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Term
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Definition
| supporting cells that surround nerve cell bodies that protect hte neuron, provide electrical insulation and exchange metabolites. |
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Term
| tactile corpuscle of Meissner |
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Definition
| tactile nerve endings; found in finger tips, palms, soles |
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Term
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Definition
encapsulated
responds to deep pressure and vibration |
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Term
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Definition
encapsulated
detection of position, movement, sliding motion and touch |
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Term
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Definition
encapsulated
thermoreceptor?
unknown function as of now!!! |
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Term
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Definition
non encapsulated afferent
receptor for delicate touch, associated with modified epithelial cells |
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