Exam 2 Second Half

42 Questions | Total Attempts: 353

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Exam 2 Second Half

Respiratory System


Questions and Answers
  • 1. 
    ______ states that the total pressure of a gas miture is equal to the sum of the partial pressures of its individual gases
    • A. 

      Dalton's law

    • B. 

      Charles's law

    • C. 

      Boyle's law

  • 2. 
    Deep, rapid breathing often seen in terminal diabetes mellitus is known as what?
    • A. 

      Dyspnea

    • B. 

      Orthopenea

    • C. 

      Kussmaul respiration

  • 3. 
    Carbon Dioxide is transported by all the following means except
    • A. 

      Dissolved gas

    • B. 

      Carbonate

    • C. 

      Bicarbonate ions

    • D. 

      Carbaminohemoglobin

    • E. 

      Carbonic acid

  • 4. 
    Tom is in respiratory arrest due to an electrical shock. Why does a good amaritan have up to 4 or 5 minutes to begin CPR and save tom's life?
    • A. 

      The ambient Po22 can support life that long

    • B. 

      The Haldane effect lasts up to t minutes

    • C. 

      A venous reserve of oxygen in tom's blod

  • 5. 
    Which of the folowing would slow down gas exchange between the blood and alveolar air
    • A. 

      An increase in membrane thickness

    • B. 

      An increase in respiratory rate

    • C. 

      A decrease in membrane thickness

  • 6. 
    In addition of C02 to the blood generates ______ ions in the RBCs, which in turn stimulates RBCS to unload more oxygen
    • A. 

      Chloride

    • B. 

      Hydrogen

    • C. 

      Potassium

  • 7. 
    Which of the following has no effect on oxyhemoglobin dissociation
    • A. 

      High tissue carbon dioxide

    • B. 

      Blood pressure

    • C. 

      Fever

    • D. 

      Low pH

    • E. 

      1,3- BPG (bisphosphoglycerate)

  • 8. 
    Which has the highest concentration in the air we breath?
    • A. 

      Nitrogen

    • B. 

      Oxygen

    • C. 

      Carbon dioxide

  • 9. 
    Each hemoglobin molecule can transport up to _______ oxygen molecules
    • A. 

      10

    • B. 

      2

    • C. 

      4

  • 10. 
    Normally the systemic arterial blood has Po2 of ______ mmHg, a Pc02 of _______ mm HG, and a pH of _____
    • A. 

      95, 40, 7.5

    • B. 

      40, 95, 7.5

    • C. 

      7.5, 95, 40

  • 11. 
    Which of the following enxymes in a RBC breaks H2CO3 down to water and carbon dioxide
    • A. 

      Hemoglobin

    • B. 

      Carbonic anhydrase

    • C. 

      Carbozyhemoglobin

  • 12. 
    In one passage through a bed of systemic blood capillaries, the blood gives up about what percentage of its oxygen?
    • A. 

      20% to 25 %

    • B. 

      30 to 40 %

    • C. 

      15- 20%

  • 13. 
    Which of the following is the term for a deficiency of oxygen or the inability to utilize ocygen in a tissue?
    • A. 

      Anexia

    • B. 

      Cyanosis

    • C. 

      Hypoxia

  • 14. 
    Congestive heart failure results in which of the following?
    • A. 

      Ischemic hypoxia

    • B. 

      Hypoxemic hypoxia

    • C. 

      Anemic hypoxia

  • 15. 
    ________ is a lung disease marked by a reduced number of cilia, reduced motility of the remaining cilia, goblet cell hypertrophy and hypersecretion, and thick sputum.
    • A. 

      Chronic bronchitis

    • B. 

      Atelectasis

    • C. 

      Oat- cell carcinoma

    • D. 

      Emohysema

    • E. 

      Asthma

  • 16. 
    Which of the following would lead to anemic hypoxia?
    • A. 

      Asthma

    • B. 

      Sickle- cell disease

    • C. 

      Atelectasis

  • 17. 
    A lung isease marked by abnormally few by large alveoli is
    • A. 

      Cor pulmonale

    • B. 

      Collapsed lung

    • C. 

      Emphysema

  • 18. 
    A failing of the right ventricle of the heart due to increased pressure or resistance in the lungs to blood flow is called
    • A. 

      Congestive heart failure

    • B. 

      Cor pulmonale

    • C. 

      Pulmonary edema

  • 19. 
    This nerve conrols quiet respiration
    • A. 

      Phrenic nerve

    • B. 

      Vagus nerve

    • C. 

      Pulmonary plexus

    • D. 

      Diaphragmatic nerve

  • 20. 
    What is the medical term used to describe a lung that is no longer exchanging gases due to the physical collapse of the alveoli (collapsed lung)
    • A. 

      Apnea

    • B. 

      Dyspnea

    • C. 

      Acute bronchitis

    • D. 

      Atelectasis

  • 21. 
    Scuba divers breathe a nitrogen- oxygen mixture rather than pure compresssed oxygen in order to avoid
    • A. 

      Caisson disease

    • B. 

      Oxygen toxicity

    • C. 

      Hypoxemic hypoxia

  • 22. 
    Blood banks dispose of blood that has low levels of bisphosphoglycerate. what would be the probable reason for doing so?
    • A. 

      Erythrocytes low in BPG do not load O2 very well

    • B. 

      Erythrocytes low in BPG do not unload O2 very well

    • C. 

      A low BPG level causes acidosis of blood

  • 23. 
    The blood transports more CO2 in the form of _______ than in any other form
    • A. 

      Bisphosphocarbonate

    • B. 

      Bicarbonate ions

    • C. 

      Disssolved CO2 gas

    • D. 

      Carboxyhemoglobin

  • 24. 
    Carbon monoxide kills by
    • A. 

      Turning hemoglobin bright red

    • B. 

      Damaging lung tissue

    • C. 

      Blocking O2 binding to hemoglobin

    • D. 

      Removing CO2 from hemobglobin

    • E. 

      Stopping the Bohr effect

  • 25. 
    When temperature rises, the oxygen dissociation curve shifts to the right, causing
    • A. 

      Less oxygen to unload in the tissues

    • B. 

      More oxygen loading in the lungs

    • C. 

      More carbon dioxide to leave the lungs

    • D. 

      Less carbon dioxide to leave the lungs

    • E. 

      More oxygen to unload in the tissues

  • 26. 
    If fetal hemoglobin is 50% saturated at an O2 partial pressure of 19 mm Hg, and adult hemoglobin is 50% saturated at 26.9 mm Hg, the hemoglobin oxygen dissociation curve for a fetus is to the ______ of the adult curve, and O2 unloads _______ for a fetus.
    • A. 

      Left; less easily

    • B. 

      Right; more easily

    • C. 

      Right; less easily

    • D. 

      Left; more easily

  • 27. 
    This ion is antiported across the RBC membrane to counter- balance the chare of bicarbonate leaving the cell and entering the blood
    • A. 

      Po4-

    • B. 

      Na _

    • C. 

      Ca 2+

    • D. 

      K +

    • E. 

      Cl-

  • 28. 
    The blood transports more CO2 in the form of ______ than in any other form
    • A. 

      Carbaminohemoglobin

    • B. 

      Bisphosphocarbonate

    • C. 

      Bicarbonate ions

  • 29. 
    Which of the hollowing enxymes in an RBC breaks H2CO3 down to water and carbon dioxide?
    • A. 

      Bisphosphoglycerate

    • B. 

      Hemoglobin

    • C. 

      Carbonic anhydrase

  • 30. 
    In one passage through a bed of systemic blood capillaries, the blood gives up about what percentage of its oxygen?
    • A. 

      20- 25%

    • B. 

      5- 10 %

    • C. 

      70- 85%

  • 31. 
    The nerve used to control the diaphragm is the
    • A. 

      Sympathetic nerves

    • B. 

      The parasympathetic nerves

    • C. 

      Phrenic nerves

  • 32. 
    The adition of CO2 to the blood generates ___ ions in the RBCs, which in turn stimulates RBCs to unlad more oxygen.
    • A. 

      Chloride

    • B. 

      Hydrogen

    • C. 

      Sodium

  • 33. 
    Surfactant keeps
    • A. 

      Dead air space at a minumum

    • B. 

      The bronchioles clear

    • C. 

      The alveoli from collapsing

    • D. 

      The surface of the alveoli clean

  • 34. 
    In a health perosn, which of the following will have the greatest inluence on resistance to pulmonary airflow?
    • A. 

      Respiratory rate

    • B. 

      The diaphragm

    • C. 

      Bronchiole diameter

  • 35. 
    You can't breath from a snorkel 2 feet long because of
    • A. 

      Decreased pulmonary pressured

    • B. 

      Increased dead air space

    • C. 

      Limited respiratory reserve

  • 36. 
    The partial pressure of carbon dioxide is highest in
    • A. 

      The tissues of the body

    • B. 

      The alveoli

    • C. 

      The trachea

    • D. 

      External air

  • 37. 
    Deep, rapid breathing often seen in terminal diabetes mellitus is known as what?
    • A. 

      Dyspnea

    • B. 

      Orthopnea

    • C. 

      Hyperpnea

    • D. 

      Kussmaul respiration

  • 38. 
    A lung disease marked by abnormally few but large alveoli is
    • A. 

      Bronchitis

    • B. 

      Atelectasis

    • C. 

      Emphysema

  • 39. 
    Bicarbonate is shuttled across the RBC membrane during times of high carbon dioxide partial pressure and an ________ ion is into the RBC
    • A. 

      Calcium

    • B. 

      Chloride

    • C. 

      Sodium

  • 40. 
    Which of the following has no effect on oxyhemoglobin dissociation
    • A. 

      Erythrocyte count

    • B. 

      Temperature

    • C. 

      High pH

    • D. 

      Fever

    • E. 

      Low pH

  • 41. 
    Which of the following is NOT correct
    • A. 

      Increases in temperature lead to oxygen unloading easier from hemoglobin

    • B. 

      Increases in temperature lead to carbon dioxide unloading easier from hemoglobin

    • C. 

      Increases in acidity lead to oxygen unloading easier from hemoglobin

    • D. 

      Increases in carbon dioxide lead to oxygen unloading easier from hemoglbion

    • E. 

      Increases in oxygen lead to carbon dioxide unloading easier from hemoglobin

  • 42. 
    The pH of the cerbrospinal fluid is monitored by which structure
    • A. 

      Central chemoreceptor

    • B. 

      Peripheral chemirecepter

    • C. 

      Carotid bodies