Ventilation

1. During inhalation, the __________ contracts and flattens, moving downward.

1. During inhalation, the __________ intercostal muscles contract, lifting the ribcage upward and outward.

As the thoracic cavity expands, lung volume __________.

1. When lung volume increases, lung pressure __________ (increases/decreases).

1. During inhalation, air flows __________ (in/out) of the lungs.

7. During passive exhalation, the diaphragm __________ and returns to its dome shape.

During forceful exhalation, the __________ muscles contract to push the diaphragm upward more quickly

11. During exhalation, the __________ intercostal muscles contract to pull the ribs down.

7. As thoracic cavity volume decreases, the lung pressure __________ (increases/decreases).

During exhalation, air moves ________ (in/out) of the lungs.