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lbvjy [14]
3 years ago
10

Plz help!

Biology
2 answers:
olga nikolaevna [1]3 years ago
5 0
Because u can define it by any number given
S_A_V [24]3 years ago
3 0

Answer:

1.The pleural cavity aids optimal functioning of the lugs during breathing. It transmits movements of the chest wall to the lungs, particularly during heavy breathing. The closely approved chest wall transmits pressures to the visceral pleural surface and hence to the lung (10-19.

2.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 enlarge.

Explanation:

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