When you inhale, the diaphragm
a. relaxes and moves inferiorly.
b. relaxes and moves superiorly.
c. contracts and moves superiorly.
d. contracts and moves inferiorly.
During inspiration, intrapulmonary pressure is
a. greater than atmospheric pressure.
b. less than atmospheric pressure.
c. greater than intrapleural pressure.
d. less than intrapleural pressure.
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