Hyperkalemia is defined as
A. excess excitability of kalems.
B. reduction of plasma calcium level.
C. increase in plasma potassium level.
D. increase in plasma sodium level.
E. decrease in plasma potassium level.
(
Question 2) Oversecretion of aldosterone causes
A. decreased secretion of calcium by the kidney.
B. increased secretion of potassium by the kidney.
C. decreased reabsorption of sodium by the kidney.
D. increased reabsorption of phosphate ions by the kidney.
E. decreased secretion of potassium by the kidney.
(
Question 3) The most common cause of hyperkalemia is
A. vomiting.
B. increased dietary intake.
C. increased urinary output.
D. cellular injury or death.
E. diarrhea.
(
Question 4) Aldosterone secretion may be stimulated by
A. ADH.
B. elevated potassium levels.
C. excess water intake.
D. elevated sodium levels.
E. low potassium levels.
(
Question 5) Potassium levels in the body are regulated by
A. ADH.
B. PTH.
C. calcitonin.
D. aldosterone.
E. insulin.
(
Question 6) Decreased extracellular potassium levels cause
A. cells to become more excitable.
B. hyperpolarization of cell membranes.
C. more action potentials to be generated.
D. increased permeability of cell membranes.
E. hypopolarization of cell membranes.
(
Question 7) Which of the following statements concerning potassium ions is false?
A. An increase in the extracellular potassium ion concentration leads to depolarization.
B. Potassium ions are secreted into the nephron by the distal convoluted tubule.
C. When aldosterone levels are high, potassium secretion is low.
D. Aldosterone secretion is stimulated by high blood levels of potassium ions.
E. None of these choices is false.
(
Question 8) Chloride ions
A. are cations.
B. are found only inside cells.
C. are part of the DNA molecule.
D. are regulated with Na+.
E. are not found in extracellular fluid.
(
Question 9) The composition of extracellular fluid has little affect on intracellular fluid amounts.
Indicate whether the statement is true or false.
(
Question 10) Which of the following would be expected to cause hyponatremia?
A. high intake of sodium
B. increased aldosterone production
C. increased urine output
D. decreased aldosterone production
E. decreased ADH production
Quick Reply
