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The _____ is a funnel-shaped tube that extends from the nasal and oral cavities to the larynx and esophagus.

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Which of the following occurs when cardiac output rises?


A) The amount of O2 diffusing from alveolar air into the blood decreases.
B) The amount of blood flowing to the lungs increases.
C) The amount of O2 consumed by muscles decreases.
D) The surface area available for O2 diffusion decreases.
E) The amount of CO2 retained by the lungs increases.

F) B) and C)
G) A) and E)

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