Drexel A&P 103 Final Prep / Ch 23-25 & 28 Questions and Answers
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Drexel A&P 103 Final Prep / Ch 23-25 & 28
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Drexel A&P 103 Final Prep / Ch 23-25 & 28
Drexel A&P 103 Final Prep / Ch 23-25 & 28
Which of the following structures is not part of the respiratory zone?
- Respiratory bronchioles
- Terminal bronchioles
- Alveolar ducts
- Alveoli - Answer- Terminal bronchioles
During inhalation, the thoracic cavity __________; during exhalatio...
the partial pressure of gases in cells of systemic
pulmonary ventilation breathing can also be desc
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Drexel A&P 103 Final Prep / Ch 23-25 & 28
Drexel A&P 103 Final Prep / Ch 23-25 & 28
Drexel A&P 103 Final Prep / Ch 23-25 & 28
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Drexel A&P 103 Final Prep / Ch 23-25 &
28
Which of the following structures is not part of the respiratory zone?
- Respiratory bronchioles
- Terminal bronchioles
- Alveolar ducts
- Alveoli - Answer- Terminal bronchioles
During inhalation, the thoracic cavity __________; during exhalation, the thoracic
cavity __________.
- Becomes larger; becomes smaller than its resting size
- Returns to normal, resting size; becomes smaller than its original size
- Becomes larger; returns to its original size
- Obtains its original size; becomes smaller due to muscles of exhalation - Answer-
Becomes larger; returns to its original size
The partial pressure of gases in cells of systemic tissues result from
- Cellular respiration
- Internal respiration
- Pulmonary ventilation
- External respiration - Answer- Cellular respiration
Pulmonary ventilation (breathing) can also be described as
- The process of inspiration only
- The process of expiration only
- The process of gas exchange in the lungs only
- The movement of air into and out of the lungs - Answer- The movement of air into
and out of the lungs
During alveolar gas exchange, blood P(CO2)
- Decreases from 45 to 40 mm Hg
- Increases from 40 to 45 mm Hg
- Increases from 40 to 104 mm Hg
- Decreases from 95 to 40 mm Hg - Answer- Decreases from 45 to 40 mm Hg
During systemic gas exchange blood P(O2)
- Decreases from 45 to 40 mm Hg
- Decreases from 95 to 40 mm Hg
- Increases from 40 to 45 mm Hg
- Increases from 40 to 104 mm Hg - Answer- Decreases from 95 to 40 mm Hg
The largest percentage of carbon dioxide is transported in the blood
- As bicarbonate dissolved in the plasma
- Dissolved in the plasma
- Attached to the globin portions of hemoglobin
, - Attached to the hydrophilic carrier in the plasma - Answer- As bicarbonate
dissolved in the plasma
Boyle's Law states that at a constant temperature
- The pressure exerted by a gas varies inversely with the volume of that gas
- The pressure exerted by a gas varies directly with the volume of that gas
- The pressure exerted by a gas remains the same no matter what the volume of that
gas is
- The volume of a gas remains the same no matter what the pressure exerted by that
gas is - Answer- The pressure exerted by a gas varies inversely with the volume of
that gas
The right lung has __________ lobes, and the left lungs has __________ lobes.
- Five; four
- Three; two
- Three; three
- Two; two - Answer- Three; two
The respiratory division of the respiratory system
- Involves the exchange of oxygen and carbon dioxide between the air and blood
- Involves the transport of air into and out of the lungs - Answer- Involves the
exchange of oxygen and carbon dioxide between the air and blood
The lungs remain inflated despite their tendency to collapse. What is the reason for
this?
- The elastic tissue content of the lung
- The negative intrapleural pressure relative to intrapulmonary pressure
- A partial vacuum created in the intrapulmonary cavity - Answer- The negative
intrapleural pressure relative to intrapulmonary pressure
During normal quiet breathing, the __________ is inactive and exhalation is a
passive event that does not require nervous stimulation.
- Ventral respiratory group
- Dorsal respiratory group - Answer- Ventral respiratory group
The main function of the sympathetic innervation of the lungs is
- Bronchodilation
- Bronchoconstriction - Answer- Bronchodilation
True or False: As the diaphragm relaxes, it is depressed (move inferiorly) - Answer-
False
True or False: As the lungs expand while breathing, the pressure in the lungs
decreases. - Answer- True
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