What is the purpose of cilia in the airways?.
To propel air into the lungs.
To trap food and prevent entry into the windpipe.
To propel trapped debris upward to be expelled by the body.
For olfaction.
The Correct Answer is C
hoice A rationale:
Cilia do not propel air into the lungs, they are involved in moving mucus and trapped particles.
Choice B rationale:
Cilia do not trap food or prevent its entry into the windpipe. This is the role of the epiglottis, not cilia.
Choice C rationale:
Cilia in the airways help to propel trapped debris and mucus upward to be expelled by the body.
Choice D rationale:
Cilia do not have a role in olfaction or the sense of smell.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice B rationale:
The bronchioles are part of the airway that leads to the alveoli, but gas exchange does not occur here.
Choice C rationale:
The bronchus is a larger airway that leads to the bronchioles and then to the alveoli, but gas exchange does not occur here.
Choice D rationale:
While the lungs contain the alveoli where gas exchange occurs, saying that gas exchange occurs in the lungs is not as precise as saying it occurs in the alveoli.
Correct Answer is C
Explanation
Choice A rationale:
Sinusoids are a type of capillary found in some organs, not vessels that carry blood to the heart from the lungs.
Choice B rationale:
Arteries typically carry oxygenated blood away from the heart to the body’s tissues, not to the heart from the lungs.
Choice C rationale:
Veins, specifically the pulmonary veins, carry oxygenated blood from the lungs to the heart.
Choice D rationale:
Arterioles are small branches of arteries that lead to capillaries, not vessels that carry blood to the heart from the lungs.
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