bright field microscopy correct answers Shines light through sample and magnifies the image
with a series of lenses.-- good resolution
dark field illumination correct answers illuminating rays of light are directed through the sample
from the side by putting the dark disk into the condenser that hinders the main light beam --
increased contrast
phase contrast microscope correct answers light passing through the specimen travels slower
than undisturbed light beam. phase shifted when it goes through specimen -- best for contrast,
hyaline cast, mucus
polarizing microscope correct answers polarized light vibrates in one direction, uses filters that
allow for vibrations in one plane -- best for birefringent samples
Squamous epithelial cells correct answers line urethra, most common in urine, large, no clinical
significance
Transitional epithelial cells correct answers pelvis of kidney to base of bladder, caudate
projections
RTE cells correct answers from proximal tubule -- columnar and large, distal tubule -- smaller
and round. indicates infection and necrosis
Hyaline cast correct answers looks like mucus, no clinical significance
granular cast correct answers from lysosome
RBC cast correct answers indicates damage to kidney filter or tubular damage
Dirty brown cast correct answers hemoglobin cast
WBC cast correct answers kidney infection, tubular damage
RTE cast correct answers damage to RTE cells -- heavy metals
Fatty cast correct answers Nephrotic syndrome, see maltese cross bodies
Waxy cast correct answers cracked edges, chronic renal failure
Broad cast correct answers from collecting ducts, renal failure cast
Crystals found in acidic urine correct answers amorphous urates, uric acid crystals, calcium
oxalate (dihydrate), calcium oxalate (monohydrate)