Exam 3: Renal Function

A laboratory supervisor is authorized to purchase a new osmometer.The supervisor must decide between a freezing-point and a vapor-pressure model. -Using the information provided,which model is more likely to be affected by technical errors?

A substance that is not filtered by the glomerulus will not be found in the urine.

Which of the following is not associated with the elimination of hydrogen ions?

The PAH test is used to measure:

Renal tubular acidosis can be caused by the:

The afferent and efferent arterioles have the ability to vary in size.

Performing a clearance test using radionucleotides:

Clearance tests used to determine the glomerular filtration rate must measure substances that are:

A patient showing symptoms of impaired renal function has a battery of tests performed.Results are: Serum creatinine: 2.0 mg/dL Urine creatinine: 150 mg/dL Serum osmolality: 270 mOsm Urine osmolality: 100 mOsm 24-hour urine volume: 2000 mL -Using the information provided,calculate the osmolar clearance.

Can a patient with the following results be given a nephrotoxic medication: urine volume-720 mL/24 h,urine creatinine-100 mg/dL,and serum creatinine-2.5 mg/dL?