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 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.
Correct Answer is D
Explanation
Choice A rationale:
Veins do not always carry deoxygenated blood. The pulmonary veins are an exception as they carry oxygenated blood from the lungs to the heart.
Choice B rationale:
Veins do not carry blood away from the heart. They carry blood back toward the heart.
Choice C rationale:
Veins do not have a thick tunica media. The tunica media is thinner in veins than in arteries.
Choice D rationale:
Veins have valves. This is a true statement. The valves in veins prevent blood from flowing backward.
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