Dr. Richmond Ch. 26

51 Questions | Total Attempts: 64

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Richmond Quizzes & Trivia

Chapter 26 Acid-Base Balance


Questions and Answers
  • 1. 
    True or False. Because of their abundant hydrogen bonds, all functional proteins are influenced by H+ concentration?
    • A. 

      True

    • B. 

      False

  • 2. 
    What is the normal arterial blood pH?
    • A. 

      7.0

    • B. 

      4.7

    • C. 

      7.4

    • D. 

      7.35

  • 3. 
    What is the normal pH of venous blood?
    • A. 

      7.53

    • B. 

      7.35

    • C. 

      7.4

    • D. 

      7.45

  • 4. 
    Blood pH above 7.45 is _______________?
    • A. 

      Alkalosis

    • B. 

      Acidosis

  • 5. 
    Blood pH below 7.35 is ________________?
    • A. 

      Alkalosis

    • B. 

      Acidosis

  • 6. 
    What are the sources of H+ ions?
    • A. 

      Metabolic processes and ingested food

    • B. 

      Fats and proteins

    • C. 

      Bicarbonate and phosphate

    • D. 

      HCO3 and H+

  • 7. 
    What is the first line of buffer system with a reaction time of less than a second?
    • A. 

      Renal mechanisms

    • B. 

      Brain stem respiratory centers

    • C. 

      Chemical buffers

  • 8. 
    What is the buffer system that has a reaction time of 1-3 minutes and change in respiratory rate and depth?
    • A. 

      Renal mechanisms

    • B. 

      Brain stem respiratory centers

    • C. 

      Chemical buffers

  • 9. 
    What buffer system has a reaction time of hours to a day and is most potent in acid base regulatory system?
    • A. 

      Renal mechanisms

    • B. 

      Brain stem respiratory centers

    • C. 

      Chemical buffers

  • 10. 
    In a chemical buffer sytem molecules will bind or release H+ when the pH drops?
    • A. 

      Release

    • B. 

      Bind

  • 11. 
    In a chemical buffer system molecules will bind or release H+ when the pH rises?
    • A. 

      Release

    • B. 

      Bind

  • 12. 
    What are the three chemical buffer systems?
    • A. 

      Brain stem, chemical, renal

    • B. 

      Bicarbonate, phosphate, protein

    • C. 

      Alkalosis, acidosis, pH

  • 13. 
    What is the main buffer of extracellular fluid? (ECF)
    • A. 

      Bicarbonate buffer

    • B. 

      Chemical buffer

    • C. 

      Phosphate buffer

    • D. 

      Protein buffer

  • 14. 
    What is the result of a strong acid?
    • A. 

      Slight increase in pH

    • B. 

      Slight decrease in pH

  • 15. 
    What is the result of a strong base?
    • A. 

      Slight increase in pH

    • B. 

      Slight decrease in pH

  • 16. 
    The bicarbonate ion concentration of ECF is regulated by_________?
    • A. 

      Proteins

    • B. 

      H+

    • C. 

      Respiratory system

    • D. 

      Kidneys

  • 17. 
    The bicarbonate ion concentration of plasma is regulated by __________________?
    • A. 

      Kidneys

    • B. 

      Respiratory system

    • C. 

      Proteins

    • D. 

      Arterioles

  • 18. 
    The total amount of bicarbonate that is available in the body is called the ______________.
    • A. 

      Alkaline reserve

    • B. 

      Acidolic reserve

    • C. 

      Bicarbonate ion reserve

  • 19. 
    What system buffers urine and ICF?
    • A. 

      Protein buffer systems

    • B. 

      Bicarbonate buffer system

    • C. 

      Chemical buffer system

    • D. 

      Phosphate buffer system

  • 20. 
    What buffer system is the most plentiful and powerful source of buffers and is found in plasma and the cells?
    • A. 

      Phosphate buffer system

    • B. 

      Chemical buffer system

    • C. 

      Protein buffer system

    • D. 

      Renal mechanisms

  • 21. 
    True or False? Amino acids have exposed groups of atoms called carboxly groups (-COOH) which dissociate to release H+ when the pH begins to rise and other amino acids have exposed groups that can act as bases and accept H+.
    • A. 

      True

    • B. 

      False

  • 22. 
    The _______________ of red blood cells is an excellent example of a protein that functions as an intracellular buffer.
    • A. 

      CO2

    • B. 

      H+

    • C. 

      Hemoglobin

  • 23. 
    Carbon dioxide generated by cellular respiration enters erythrocytes in the circulation and is converted to bicarbonate ions for transport in the plasma:CO2 + H2O ----> H2CO3 <---> H+  + HCO3 CO2 unloading reaction causes a shift to the_____________?
    • A. 

      Right

    • B. 

      Left

  • 24. 
    An accumulation of CO2 is called____________________?
    • A. 

      Hypercapnia

    • B. 

      Hyperoxygenation

    • C. 

      Hyperemia

  • 25. 
    In respiratory regulation of H+ if blood pH decreases then the respiratory center (in the medulla oblongata) is _________________
    • A. 

      Depressed

    • B. 

      Activated

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