Chapter 5 Study Questions Flashcards
The color of normal urine is due to the pigment
(a) bilirubin
(b) urobilin
(c) uroerythrin
(d) urochrome
(d) urochrome
A single substance can impart different colors to urine depending on the
1. amount of the substance present 2. storage conditions of the urine 3. pH of the urine 4. structural form of the substance (a) 1, 2, and 3 are correct (b) 1 and 3 are correct (c) 4 is correct (d) All are correct
(d) All are correct
Which of the following urine characteristics provides the best rough indicator of urine concentration and body hydration?
(a) Color
(b) Clarity
(c) Foam
(d) Volume
(a) Color
Which of the following pigments deposits on urate and uric acid crystals to form a precipitate described as “brick dust”
(a) Bilirubin
(b) Urobilin
(c) Uroerythrin
(d) Urochrome
Uroerythrin
Which of the following criteria should one use to consistently evaluate urine color and clarity?
1. Mix all specimens well. 2. Use the same depth or volume of a specimen. 3. Evaluate the specimens at the same temperature. 4. View the specimens agains a dark background with good lighting. (a) 1, 2, and 3 are correct (b) 1 and 3 are correct (c) 4 is correct (d) All are correct
(a) 1, 2, and 3 are correct
Select the urine specimen that does not indicate the possible presence of blood or hemoglobin.
(a) Clear, red urine
(b) Cloudy, brown
(c) Clear, brown urine
(d) Cloudy, amber urine
(d) Cloudy, amber urine
A urine that produces a large amount of white foam when mixed should be suspected to contain increased amounts of
(a) bilirubin
(b) protein
(c) urobilin
(d) urobilinogen
(b) protein
Which of the following substances can change the color of a urine and its foam?
(a) Bilirubin
(b) Hemoglobin
(c) Myoglobin
(d) Urobilin
(a) Bilirubin
The clarity of a well-mixed urine specimen that has visible particulate matter and through which newsprint can be seen but not read should be described as
(a) cloudy
(b) flocculated
(c) slightly cloudy
(d) turbid
(a) cloudy
Classify each substance that can be present in urine as indicating as (1) pathogenic or (2) nonpathogenic condition.
Bacteria (fresh urine)
(1) Pathogenic
Classify each substance that can be present in urine as indicating as (1) pathogenic or (2) nonpathogenic condition.
Bacteria (old urine)
(2) nonpathogenic
Classify each substance that can be present in urine as indicating as (1) pathogenic or (2) nonpathogenic condition.
Fat
(1) Pathogenic
Classify each substance that can be present in urine as indicating as (1) pathogenic or (2) nonpathogenic condition.
Powder
(2) nonpathogenic
Classify each substance that can be present in urine as indicating as (1) pathogenic or (2) nonpathogenic condition.
Radiographic contrast media
(2) nonpathogenic
Classify each substance that can be present in urine as indicating as (1) pathogenic or (2) nonpathogenic condition.
Red blood cells
(1) pathogenic
Classify each substance that can be present in urine as indicating as (1) pathogenic or (2) nonpathogenic condition.
Renal epithelial cells
(1) pathogenic
Classify each substance that can be present in urine as indicating as (1) pathogenic or (2) nonpathogenic condition.
Spermatozoa
(2) nonpathogenic
Classify each substance that can be present in urine as indicating as (1) pathogenic or (2) nonpathogenic condition.
Squamous epithelial cells
(2) nonpathogenic
Classify each substance that can be present in urine as indicating as (1) pathogenic or (2) nonpathogenic condition.
Urate crystals
(2) nonpathogenic
Classify each substance that can be present in urine as indicating as (1) pathogenic or (2) nonpathogenic condition.
White blood cells
(1) pathogenic
Classify each substance that can be present in urine as indicating as (1) pathogenic or (2) nonpathogenic condition.
Yeast
(1) pathogenic
Which of the following urine specimens is considered normal?
(a) A freshly voided urine that is brown and clear
(b) A freshly voided urine that is yellow and cloudy
(c) A clear yellow urine specimen that changes color upon standing
(d) A clear yellow urine specimen that becomes cloudy upon refrigeration
(d) A clear yellow urine specimen that becomes cloudy upon refrigeration
A white or beige precipitate in a “normal” alkaline urine most likely is caused by
(a) amorphous phosphates
(b) amorphous urates
(c) uric acid crystals
(d) radiographic contrast media
(a) amorphous phosphates
Which of the following methods used to determine the specific gravity of urine does not detect the presence of urine protein or glucose?
(a) Harmonic oscillation densitometry
(b) Reagent strip
(c) Refractometry
(d) Urinometry
(b) Reagent strip
A small ion and a large ion uncharge molecule have the same effect when urine concentration is determined by
(a) urinometry
(b) osmolality
(c) reagent strip
(d) refractometry
(b) osmolality
Which of the follow specific gravity values is physiologically impossible?
(a) 1.000
(b) 1.010
(c) 1.020
(d) 1.030
(a) 1.000
Which of the following methods is an indirect measure of specific gravity?
1. Reagent strip 2. Urinometry 3. Refractometry 4. Harmonic oscillation densitometry (a) 1, 2, and 3 are correct (b) 1 and 3 are correct (c) 4 is correct (d) All are correct
(b) 1 and 3 are correct
The refractive index of a solution is affected by the
1. wavelength of light used 2. size and number of the solutes present 3. concentration of the solution 4. temperature of the solution (a) 1, 2, and 3 are correct (b) 1 and 3 are correct (c) 4 is correct (d) All are correct
(d) All are correct
