The main muscle responsible for pulmonary ventilation is?.
External intercostals.
Abdominals.
Internal intercostals.
Diaphragm.
The Correct Answer is D
hoice A rationale:
External intercostals assist in inspiration by elevating the ribs and expanding the chest cavity.
Choice B rationale:
Abdominals are not the main muscles responsible for pulmonary ventilation.
Choice C rationale:
Internal intercostals assist in forced expiration.
Choice D rationale:
The diaphragm is the main muscle responsible for pulmonary ventilation.
So, the correct answer is Choice D, after analyzing all choices.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A rationale:
After passing through the glottis, inspired air does not travel to the pharynx. The pharynx is actually before the glottis in the airway.
Choice B rationale:
Inspired air does not travel directly to the bronchi after passing through the glottis.
Choice C rationale:
Inspired air does not travel directly to the alveoli after passing through the glottis.
Choice D rationale:
After passing through the glottis, inspired air travels to the larynx.
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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