Question The ___________ is a strong wall of muscle that contracts to create a suction in the chest to draw in air and expand the lungs. When the muscle relaxes, the chest cavity decreases and the air is pushed out. (1 point) Responses Pulmonary artery Pulmonary artery Breathing apparatus Breathing apparatus Trachea Trachea Diaphragm

1 answer

Diaphragm

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