Acid-Base Balance and pH Scale

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Questions and Answers

What is the result of CO2 combining with water in the body?

  • Formation of carbonic acid and subsequently bicarbonate and hydrogen ions (correct)
  • Formation of oxygen and hydrogen ions
  • Formation of nitrogen and oxygen ions
  • Formation of alkaline and acidic ions

What is the role of the kidneys in regulating blood pH?

  • To regulate heart rate
  • To increase oxygen levels in the blood
  • To adjust the excretion of hydrogen and bicarbonate ions as required (correct)
  • To control blood pressure

What is the relationship between bicarbonate levels and pH levels?

  • Bicarbonate levels increase as pH levels decrease
  • There is no correlation between bicarbonate levels and pH levels
  • Bicarbonate levels and pH levels increase or decrease together (correct)
  • Bicarbonate levels decrease as pH levels increase

What is the likely diagnosis of Alex, the 30-year-old male experiencing rapid breathing, lightheadedness, and tingling sensation in his fingers?

<p>Respiratory Alkalosis (D)</p> Signup and view all the answers

What is the time frame for adjustments made by the kidneys to accomplish?

<p>Hours to days (C)</p> Signup and view all the answers

What is the result of increased hydrogen ion excretion and bicarbonate conservation in the kidneys?

<p>Decreased pH levels (B)</p> Signup and view all the answers

What is the most likely cause of Alex's rapid breathing?

<p>Panic attack (A)</p> Signup and view all the answers

What is the likely underlying condition of Sarah's symptoms?

<p>Chronic kidney disease (C)</p> Signup and view all the answers

What is Alex's oxygen saturation level?

<p>Normal (D)</p> Signup and view all the answers

What is the primary reason Sarah's daughter called 911?

<p>Sarah's symptoms of weakness, confusion, and nausea (C)</p> Signup and view all the answers

What is Alex's heart rate?

<p>Elevated (A)</p> Signup and view all the answers

What is the primary function of the buffer system in the body?

<p>To resist changes in pH when acids or bases are added (C)</p> Signup and view all the answers

What is the pH range compatible with life?

<p>7.0 - 7.8 (A)</p> Signup and view all the answers

Which ion has a negative charge?

<p>Chloride (D)</p> Signup and view all the answers

What is the pH range of gastric juice?

<p>1.5 - 3.5 (D)</p> Signup and view all the answers

What is the primary function of the kidneys in maintaining acid-base balance?

<p>To regulate pH by excreting excess ions (D)</p> Signup and view all the answers

What is the consequence of a deviation of 'normal' pH in the body?

<p>Compromise of essential bodily functions (B)</p> Signup and view all the answers

What is Sarah's heart rate based on the assessment of her vital signs?

<p>Elevated (A)</p> Signup and view all the answers

What is the primary function of the protein buffer system in the body?

<p>To react with acids or bases to maintain pH (B)</p> Signup and view all the answers

What is the main component of the phosphate buffer system in the extracellular fluid?

<p>Dihydrogen phosphate (H2PO4-) (D)</p> Signup and view all the answers

What is the pH of a basic solution?

<p>Greater than 7 (C)</p> Signup and view all the answers

What is the reaction between excess H+ ions and excess hydroxide ions in a solution?

<p>Formation of water (C)</p> Signup and view all the answers

What is the characteristics of Sarah's skin based on the assessment of her vital signs?

<p>Cool and clammy (D)</p> Signup and view all the answers

What is the result of dihydrogen phosphate combining with hydroxide ions?

<p>Formation of water and monohydrogen phosphate (C)</p> Signup and view all the answers

What is the effect of excess hydrogen ions in a solution?

<p>The pH decreases (B)</p> Signup and view all the answers

What is the role of monohydrogen phosphate in acid-base balance?

<p>It combines with excess hydrogen ions (A)</p> Signup and view all the answers

What is the definition of an acid?

<p>A molecule that can release an H+ (B)</p> Signup and view all the answers

What are the three major mechanisms that help to control acid-base balance within the body?

<p>The carbonic acid equation, the respiratory system, and the renal system (B)</p> Signup and view all the answers

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