Which answer best describes the relationship between K+ movement ...

[chads108]

Which answer best describes the relationship between K+ movement and acid-base balance?
 
  a. Excess extracellular H+ ions are exchanged for intracellular K+.
  b. Extracellular acidosis results in serum hypokalemia.
  c. Low-K+ diets are required following na-sogastric suctioning.
  d. When the extracellular pH rises, K+ moves out of the cells.

Question 2

Hypokalemia disturbs cellular function in which of the following systems? 1. Gastrointestinal 2. Hepatic 3. Neuromuscular 4. Renal
 
  a. 1 and 2 only
  b. 2, 3, and 4 only
  c. 1, 3, and 4 only
  d. 2 and 4 only

[zacnyjessica]

Answer to Question 1

ANS: A
Serum K+ concentration is determined primarily by the pH of extracellular fluid and the size of the intracellular K+ pool. In extracellular acidosis, excess H+ ions are exchanged for intracellular K+. Movement of K+ from intracellular to extracellular spaces may produce dangerous levels of hyperkalemia.

Answer to Question 2

ANS: C
Hypokalemia (reduced serum potassium) disturbs cellular function in a number of organ systems. These include the gastrointestinal, neuromuscular, renal, and cardiovascular systems.

[chads108]

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[zacnyjessica]

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