Question

2. When the diaphragm contracts, air rich in carbon dioxide is pulled into the lungs. true or false​

Answer 1

Answer:

False

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. This contraction creates a vacuum, which pulls air rich in oxygen into the lungs.

Answer 2

no air rich in o2 and on releasing co2 is pulled out from lungs