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During inhalation, the diaphragm moves _ and the intercostal muscles move the rib cage _. ...

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During inhalation, the diaphragm moves _____ and the intercostal muscles move the rib cage _____. ...

During inhalation, the diaphragm moves _____ and the intercostal muscles move the rib cage _____.

a. downward; outward
b. outward; downward
c. outward; outward
d. downward; downward
e. outward; upward

Question 2

The pulmonary capillaries _____.

a. are closely associated with alveoli but do not fuse with them
b. fuse with the alveoli to facilitate gas exchange
c. bring oxygenated blood back to the heart
d. bring deoxygenated blood back to the heart
e. fuse with the alveoli to facilitate gas exchange, and bring oxygenated blood back to the heart

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