Urinalysis and Body Fluids Review Questions
And Answers
The specific gravity of the glomerular ultrafiltrate is: 1.01
All of the following are reabsorbed from the glomerular filtrate by active transport
glucose, sodium and amino acids
For active transport to occur, a chemical: must combine with a carrier protein to create
electrochemical energy
Water is passively reabsorbed in all parts of the nephron except the: ascending loop of
Henle
Most of the sodium filtered by the glomerulus is reabsorbed in the: proximal convoluted
tubule
The enzyme renin is produced by the kidney: in response to low plasma sodium levels
,Urinalysis and Body Fluids Review Questions
And Answers
Concentration of the tubular filtrate by the countercurrent mechanism is dependent on all of the
following high salt concentration in the medulla, water-impermeable walls of the
ascending loop of Henle, reabsorption of sodium and chloride from the ascending loop of Henle
The osmotic gradient of the medulla: affects sodium reabsorption in the proximal
convoluted tubule
Aldosterone regulates sodium reabsorption in the: distal convoluted tubule
Decreased production of vasopressin: produces a high urine volume
Production of antidiuretic hormone is controlled by the: state of body hydration
Substances removed from the blood by tubular secretion include primarily: protein-bound
substances, hydrogen, and potassium
Kidneys with impaired production of ammonia will consistently produce urine with a:
high pH
,Urinalysis and Body Fluids Review Questions
And Answers
To enhance the excretion of hydrogen ions, ammonia is produced by the cells of the: distal
convoluted tubule
To maintain the buffering capacity of the blood, hydrogen ions combine with: filtered
bicarbonate ions
Clearance tests used to determine the glomerular filtration rate must measure substances that are:
neither reabsorbed or secreted by the tubules
Results for glomerular filtration tests are reported in: milliliters per minute
All of the following are endogenous clearance test substances urea, creatinine, and beta 2
microglobulin
Performing a clearance test using radionucleotides eliminates the need to collect urine,
provides visualization of the filtration
, Urinalysis and Body Fluids Review Questions
And Answers
If a substance is completely filtered by the glomerulus and then completely reabsorbed by the
tubules, the clearance of that substance will be: zero
The most routinely used laboratory method for measuring the glomerular filtration rate is the:
creatinine clearance
The most common error in measuring the glomerular filtration rate using the creatinine clearance
is: inaccurate timing of urine collection
All of the following could cause falsely decreased creatinine clearance results
consumption of a heavy meat during urine collection, noncreatinine plasma substances
reacting in the chemical test, maintaining urine specimens at room temperature
The body surface of the average person in square meters is: 1.73
An additional calculation that may be required in the creatinine clearance is a correction for:
body size
And Answers
The specific gravity of the glomerular ultrafiltrate is: 1.01
All of the following are reabsorbed from the glomerular filtrate by active transport
glucose, sodium and amino acids
For active transport to occur, a chemical: must combine with a carrier protein to create
electrochemical energy
Water is passively reabsorbed in all parts of the nephron except the: ascending loop of
Henle
Most of the sodium filtered by the glomerulus is reabsorbed in the: proximal convoluted
tubule
The enzyme renin is produced by the kidney: in response to low plasma sodium levels
,Urinalysis and Body Fluids Review Questions
And Answers
Concentration of the tubular filtrate by the countercurrent mechanism is dependent on all of the
following high salt concentration in the medulla, water-impermeable walls of the
ascending loop of Henle, reabsorption of sodium and chloride from the ascending loop of Henle
The osmotic gradient of the medulla: affects sodium reabsorption in the proximal
convoluted tubule
Aldosterone regulates sodium reabsorption in the: distal convoluted tubule
Decreased production of vasopressin: produces a high urine volume
Production of antidiuretic hormone is controlled by the: state of body hydration
Substances removed from the blood by tubular secretion include primarily: protein-bound
substances, hydrogen, and potassium
Kidneys with impaired production of ammonia will consistently produce urine with a:
high pH
,Urinalysis and Body Fluids Review Questions
And Answers
To enhance the excretion of hydrogen ions, ammonia is produced by the cells of the: distal
convoluted tubule
To maintain the buffering capacity of the blood, hydrogen ions combine with: filtered
bicarbonate ions
Clearance tests used to determine the glomerular filtration rate must measure substances that are:
neither reabsorbed or secreted by the tubules
Results for glomerular filtration tests are reported in: milliliters per minute
All of the following are endogenous clearance test substances urea, creatinine, and beta 2
microglobulin
Performing a clearance test using radionucleotides eliminates the need to collect urine,
provides visualization of the filtration
, Urinalysis and Body Fluids Review Questions
And Answers
If a substance is completely filtered by the glomerulus and then completely reabsorbed by the
tubules, the clearance of that substance will be: zero
The most routinely used laboratory method for measuring the glomerular filtration rate is the:
creatinine clearance
The most common error in measuring the glomerular filtration rate using the creatinine clearance
is: inaccurate timing of urine collection
All of the following could cause falsely decreased creatinine clearance results
consumption of a heavy meat during urine collection, noncreatinine plasma substances
reacting in the chemical test, maintaining urine specimens at room temperature
The body surface of the average person in square meters is: 1.73
An additional calculation that may be required in the creatinine clearance is a correction for:
body size
