product in the breakdown of hemoglobin; main pigment in bile
control
a sample with a known value used to determine the accuracy of a method
Concurrent machanism
selective reabsorption process that serves to maintain the osmotic gradient
distal
farthest from a point
diuresis
passage of abnormally large amount of urine
Dysuria
painful urination
edema
swelling
-emia
relating to blood
filtration
forcing fluids and disssolved substances through a membrane by pressure
glycolysis
splitting of glucose into smaller fragments
Glycosuria(glucosuria)
glucose in the urine
Glucose oxidase
an enzyme that catalyzes the oxidation of glucose to gluconic acid and H2O2
Homeostasis
the tendency in biologic systems to maintain relatively constant condidtions in the internal environment e.g. injuries
hypersthenuria
a condition where urine has a specific gravity greater than the 1.010 SG of plasma filtrate
Hyposthenuria
less than 1.010 SG
Hydrometer
a weighted glass rod that measures density of a solutin by depth at which glass rods floats in the liquid
hemoglobinuria
hemoglobin in urine
hematuria
blood in urine; intact rbc
Isosthenuria
a condition where urine has a specific gravity equal to the 1.010 SG gravity of the plasma filtrate
Ketone bodies
degradation products of fatty acids
Ketonuria
ketones in the urine
Leukocytes Esterase
an enzyme found in leukocytes
malanogen
a colorless chromogen that will darken if exposed to light
Multistix
a plastic strip with varying numbers of test pads which are impregnated with different reagents to assay (test) a specific analyte
Myoglobin
a heme protein found in a striated muscle, which after crushing injury is released into circulation and can be easily filtered by the glomerulus
Nephritis
inflammation of the kidney
Nocturia
excessive urination during the night
Oliguria
decrease of urinary output less than 500mL with 2hrs
Orthostatic proteinuria
a condition where protein will be present in the urine only after patient has been standing
Osmotic gradient
a difference in salt concentration
Peristalsis
a progressive wave of contraction and relaxation of a tubular muscular system in which contents are forced through a system
Peroxidase
a second enzyme that catalyzes the reaction of hydrogen peroxide with a potassium iodide chromogen to oxidize the chromogen to colors ranging from green to brown
pH
the measurement of hydrogen ion concentration
Phenylketonuria
a genetic condition that is characterized by the accumalation of plasma phenylalanine
polydipsia
excessive thrist
polyuria
increase in urine flow
Proteinuria
protein in urine
proximal
nearest to point or close
pyuria
pus in urine
reabsorption
the process of bringing fluids and dissolved substances through a membrane back into the body
refractometer
an instrument used for indirectly determing specific gravity by refractive index
renal
kidney
renal calculi
kidney stones
secretion
the process of bringing fluids and dissolved substances through a membrane into the filtrate in the kidneys
specific gravity SG
the ration of weight in a volumes of fluid compared to the weight of an equal volume of distilled water at a constant temperature
Tamm-Horsfall(uromodulin)
muco-protein secreted by the renal tubules (urine cast)
Threshold substances
a substance whch is almost completely reabsorbed by the renal tubules when their concentration in plasma is within normal limits
Turbidity
a cloudiness; a disturbance of solids (sediment) in a solution
urobilinogen
one of the several reduction products seen during the breakdown of bilirubin
urea
a metabolic waste product produced in the liver from the breakdown of protein and amino acids