7.7.9: Review Questions
- Page ID
- 98262
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The respiratory system ________.
- provides body tissues with oxygen
- provides body tissues with oxygen and carbon dioxide
- establishes how many breaths are taken per minute
- provides the body with carbon dioxide
Air is warmed and humidified in the nasal passages. This helps to ________.
- ward off infection
- decrease sensitivity during breathing
- prevent damage to the lungs
- all of the above
Which is the order of airflow during inhalation?
- nasal cavity, trachea, larynx, bronchi, bronchioles, alveoli
- nasal cavity, larynx, trachea, bronchi, bronchioles, alveoli
- nasal cavity, larynx, trachea, bronchioles, bronchi, alveoli
- nasal cavity, trachea, larynx, bronchioles, bronchi, alveoli
The inspiratory reserve volume measures the ________.
- amount of air remaining in the lung after a maximal exhalation
- amount of air that the lung holds
- amount of air that can be further exhaled after a normal breath
- amount of air that can be further inhaled after a normal breath
Of the following, which does not explain why the partial pressure of oxygen is lower in the lung than in the external air?
- Air in the lung is humidified; therefore, water vapor pressure alters the pressure.
- Carbon dioxide mixes with oxygen.
- Oxygen is moved into the blood and is headed to the tissues.
- Lungs exert a pressure on the air to reduce the oxygen pressure.
The total lung capacity is calculated using which of the following formulas?
- residual volume + tidal volume + inspiratory reserve volume
- residual volume + expiratory reserve volume + inspiratory reserve volume
- expiratory reserve volume + tidal volume + inspiratory reserve volume
- residual volume + expiratory reserve volume + tidal volume + inspiratory reserve volume
How would paralysis of the diaphragm alter inspiration?
- It would prevent contraction of the intercostal muscles.
- It would prevent inhalation because the intrapleural pressure would not change.
- It would decrease the intrapleural pressure and allow more air to enter the lungs.
- It would slow expiration because the lung would not relax.
Restrictive airway diseases ________.
- increase the compliance of the lung
- decrease the compliance of the lung
- increase the lung volume
- decrease the work of breathing
Alveolar ventilation remains constant when ________.
- the respiratory rate is increased while the volume of air per breath is decreased
- the respiratory rate and the volume of air per breath are increased
- the respiratory rate is decreased while increasing the volume per breath
- both a and c
Which of the following will NOT facilitate the transfer of oxygen to tissues?
- decreased body temperature
- decreased pH of the blood
- increased carbon dioxide
- increased exercise
The majority of carbon dioxide in the blood is transported by ________.
- binding to hemoglobin
- dissolution in the blood
- conversion to bicarbonate
- binding to plasma proteins
The majority of oxygen in the blood is transported by ________.
- dissolution in the blood
- being carried as bicarbonate ions
- binding to blood plasma
- binding to hemoglobin