Biology, 13.07.2019 23:30 harris435942

Inhalation occurs when the: a. diaphragm and intercostal muscles contract and cause a decrease in intrathoracic pressure. b. diaphragm and intercostal muscles relax and cause an increase in intrathoracic pressure. c. diaphragm and intercostal muscles ascend and cause an increase in intrathoracic pressure.

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