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Gas exchange occurs in the:


The respiratory conducting passageways perform all of the following functions EXCEPT:
a. allow air to reach the lungs
b. purify air
c. humidify air
d. exchange gases
e. warm incoming air

exchange gases

which one of the following terms does NOT apply to the nose:
a. external nares
b. nasopharynx
c. nostrils
d. nasal cavity
e. nasal septum


What is the role of mucus in the nasal cavity:

trap incoming bacteria and other foreign debris

the nasal cavity is separated from the oral cavity by

both the hard and soft palate

Which one of the following bones does NOT contain paranasul sinuses:
a. frontal
b. sphenoid
c. mandible
d. ethmoid
e. maxilla


Which tonsil(s) is/are located in the oropharynx at the of the soft palate:

palatine tonsils

air from the nasal cavity enters the superior portion of the pharynx called the:


Contaminated mucus is removed from the lower respiratory passageways, such as the trachea, by:


following the removal of the larynx, a person would be unable to:


the opening between the vocal cords is called the:


the flap of elastic cartilage that protects food from entering the larynx when swallowing is the:


terminal bronchioles eventually terminate in:


The serous membrane covering the surface of the lungs is called the:

visceral pleura

Which one of the following is NOT true of the lungs:
a. the narrower portion of each lung is called the apex
b. the bases rest on the diaphragm
c. the left lung has two lobes
d. the right lung has three lobes
e. both lungs have two lobes

e. both lungs have two lobes

When oxygen enters the respiratory system, what is the next structure to which it travels immediately upon leaving the trachea:

main (primary) bronchi

What is not part of the respiratory zone:

primary bronchi

Which of the following is NOT one of the four main events of respiration:

residual volume

Exchange of both oxygen and carbon dioxide through the respiratory membrane occurs by:

simple dissusion

The lipid molecule critical to lung function that coats the gas-exchanged alveolar surfaces is called:


Air moving in and out of the lungs is called:

pulmonary ventilation

The gas exchange that occurs between blood and tissue cells at systemic capillaries is called:

internal respiration

Which non respiratory air movement clears the upper respiratory passageways:


The respiratory movement representing the total amount of exchangeable air is the:

vital capacity

The amount of air that can be forcibly exhaled after a tidal expiration is about:

1200 mL

The amount of air exchange during normal quiet breathing is about:

500 mL

Which congenital respiratory disease results in the over secretion of mucus and clogging of:

cystic fibrosis

What is the most common cause for lung cancer:


Passageway for both food and air; known as the "throat"


Rigid, patent airway reinforced with C-rings of hyaline cartilage


routes air and food into their proper channels


protects the superior opening of the larynx during swallowing


serous membranes surrounding the lungs


lipid (fat) molecule produced by the the alveoli to prevent alveoli collapse


smallest conducting passageways in the lungs


part of the respiratory zone, these air sacs are the sites of gas exchange


involves using the uvula to close the oral cavity off from the pharynx in order to clear the upper respiratory passages


an emotionally induced response that produces air movements similar to crying


a very deep inspiration formerly believed to be triggered by low oxygen


primarily an emotionally induced mechanism that involves release of air in a number of short breaths, similar to laughing


blast of upward rushing air that clears the lower respiratory passageways


sudden inspirations resulting from spams of the diaphragm


amount of air that can be forcibly exhaled after a normal tidal expiration

total lung capacity

normal, quiet breathing which moves approximately 500 mL of air per breath

tidal volume

air that enters the respiratory tract and remains within the conducting zone passageways

dead space volume

amount of air that can be inhaled forcibly over the tidal volume

inspiratory reserve volume

total amount of exchangeable air

vital capacity

air that remains in the lungs even after the most strenuous expiration

residual volume

sum total of tidal volume, inspiratory reserve volume, and expiratory reserve volume

vital capacity

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