____________ is a muscle that pushes the lungs up and down.
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The diaphragm, located below the lungs, is the major muscle of respiration. It is a large, dome-shaped muscle that contracts rhythmically and continually, and most of the time, involuntarily. Upon inhalation, the diaphragm contracts and flattens and the chest cavity enlarges.
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Answer:
The diaphragm is the muscle that pushes the lungs up and down and it is located below the lungs. It is the main muscle needed to breathe.
Explanation:
The diaphragm plays an important role in the respiratory system. When we breathe in, our diaphragm contracts and flattens, moving down towards our abdomen. This action makes a vacuum in our chest, permitting our chest to expand and pull in air.
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