Acid-Base Homeostasis Quiz
10 Questions
16 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which of the following is true about acidemia?

  • It is a normal physiological state
  • It causes denaturation of proteins (correct)
  • It is regulated by the respiratory system
  • It occurs when the pH is alkaline
  • Which of the following is a component of the bicarbonate buffer system?

  • Hyperventilation
  • Carbon dioxide (correct)
  • Phosphates
  • Proteins
  • Which of the following is NOT one of the lines of defense in acid-base homeostasis?

  • Chemical buffers
  • Renal component
  • Respiratory component
  • Metabolic component (correct)
  • Which system is responsible for adding or removing bicarbonate ions to or from the extracellular fluid (ECF)?

    <p>Renal system</p> Signup and view all the answers

    What happens to the plasma pH when bicarbonate ions are secreted into the blood plasma?

    <p>The plasma pH rises</p> Signup and view all the answers

    Which buffer is the most abundant in the extracellular fluid?

    <p>Bicarbonate (HCO−3) salt</p> Signup and view all the answers

    What is the Henderson–Hasselbalch equation used for?

    <p>To calculate the pH of the extracellular fluid</p> Signup and view all the answers

    Which equation represents the relationship between pH, bicarbonate concentration, and partial pressure of carbon dioxide in the extracellular fluid?

    <p>pH = 6.1 + log10([HCO3-]/0.0307 × PCO2)</p> Signup and view all the answers

    What is the molar concentration of carbonic acid in the extracellular fluid denoted as?

    <p>[H2CO3]</p> Signup and view all the answers

    Which of the following can regulate the pH of the extracellular fluids?

    <p>Both PCO2 and HCO3-</p> Signup and view all the answers

    Study Notes

    Acid-Base Homeostasis

    • Acidemia refers to a state of abnormally low pH in the blood, i.e., acidic blood.

    Bicarbonate Buffer System

    • The bicarbonate buffer system consists of carbonic acid (H2CO3) and bicarbonate ions (HCO3-).
    • This system is responsible for maintaining the acid-base balance in the body.

    Lines of Defense in Acid-Base Homeostasis

    • The three lines of defense in acid-base homeostasis are the buffering of excess hydrogen ions, the regulation of respiratory rate, and the regulation of kidney function.

    Regulation of Bicarbonate Ions

    • The kidneys are responsible for adding or removing bicarbonate ions to or from the extracellular fluid (ECF).

    Effects of Bicarbonate Secretion

    • When bicarbonate ions are secreted into the blood plasma, the plasma pH increases, i.e., the blood becomes more alkaline.

    Abundance of Buffers in Extracellular Fluid

    • The bicarbonate buffer is the most abundant buffer in the extracellular fluid.

    Henderson-Hasselbalch Equation

    • The Henderson-Hasselbalch equation is used to calculate the pH of a solution based on the concentration of bicarbonate ions and the partial pressure of carbon dioxide.
    • The equation represents the relationship between pH, bicarbonate concentration, and partial pressure of carbon dioxide in the extracellular fluid: pH = pKa + log([HCO3-]/[H2CO3]).

    Carbonic Acid Concentration

    • The molar concentration of carbonic acid in the extracellular fluid is denoted as H2CO3.

    Regulation of pH in Extracellular Fluids

    • The kidneys, lungs, and buffer systems can regulate the pH of the extracellular fluids.

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Description

    Test your knowledge on acid-base homeostasis and its importance in maintaining the body's pH balance. Learn about the regulation of extracellular fluid and its impact on cellular metabolism.

    More Like This

    Acid-Base Balance Quiz
    34 questions
    Homeostasis Ácido-Base en ISTCRE
    29 questions
    Use Quizgecko on...
    Browser
    Browser