Clin Chem Quiz12
Sodium and water metabolism.
A family of peptides called natriuretic peptides serves to regulate:
Stimulates ADH secretion and thirst.
Angiotensin II is a potent vasoconstrictor that:
ADH secretion and thirst
Angiotensin II stimulates
13 mmol/L
Calculate the anion gap given the following data: Sodium = 143 mmol/L; chloride = 105 mmol/L; and HCO3 = 25 mmol/L.
A falsely low serum sodium result in a grossly lipemic specimen.
Electrolyte exclusion effect is characterized as which of the following?
Renal Failure
Hypokalemia may be seen in each of the following EXCEPT:
Renal failure.
Hypokalemia may be seen in each of the following EXCEPT:
around the cells
Interstitial fluid is the fluid
Ion selective electrodes
Measurement of sodium, potassium, and chloride are commonly performed in laboratories using which of the following?
Fibrinogen
Serum lacks which of the following constituents?
Sodium, chloride, potassium, and HCO3-
The anion gap is determined from which of the following groups of electrolytes?
Cystic fibrosis
Elevated sweat chloride is associated with which disease?
Potassium
The presence of only slightly visible hemolysis can significantly increase the serum level of which of the following ions?
vasoconstriction
What is the effect of angiotensin II?
adrenals
Which gland secretes aldosterone?
ADH/vasopressin
Which hormone stimulates water reabsorption?
Cushing's disease
Which of the following conditions is NOT associated with hyponatremia?
Diabetes insipidus
Which of the following conditions is associated with hypernatremia?
All the above
Which of the following conditions may be characterized by an increased anion gap?
An increased osmolal gap
A patient with a toxic level of blood alcohol would cause which of the following?
Decreased serum sodium, osmolality, chloride and and increased urine sodium
A patient with syndrome of inappropriate secretion of antidiuretic hormone (SIADH) would present with which of the following laboratory results?
Na reabsorption by the kidneys
Aldosterone stimulates
within the cells
The intracellular fluid compartment is made of all the water:
the kidneys
Renin is produced in
Chloride.
The anion with the highest extracellular concentration is:
Sodium
The cation with the highest extracellular concentration is:
Potassium
The cation with the highest intracellular concentration is:
True
Interstitial fluid is an extracellular fluid.
hypothalamus
Water metabolism is under the influence of the
Renal failure(third selection)
Which of the following conditions will cause an increase anion gap?
Sodium
Which of the following electrolyte levels best correlate with plasma osmolality?
Renin is released from the kidney; renin converts angiotensinogen to angiotensin I; angiotensin I is converted to angiotensin II.
Which of the following sequences accurately reflects the renin-angiotensin-aldosterone system in response to hyponatremia?
Colligative properties of a solution.
Freezing point depression is one of the:
1/3
How much of our body water is found in extracellular fluid, including plasma?
2/3
How much of our body water is found in intracellular fluid?
Chloride
In the blood, bicarbonate leaves the red blood cell and enters the plasma through an exchange mechanism with which of the following ions?
