During inhalation:
a. the diaphragm relaxes.
b. the diaphragm and rib muscles contract....
Health, 10.03.2020 08:56, nagwaelbadawi
During inhalation:
a. the diaphragm relaxes.
b. the diaphragm and rib muscles contract.
c. oxygen molecules move into the lungs, and carbon dioxide molecules move out of the lungs.
d. the volume of the thoracic cavity decreases.
e. air moves up the trachea.
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