A doctor was doing some lung tests on a patient and testing the air pressure inside the patient's lungs. She found that when the patient's chest got larger while inhaling air that the pressure in the patient's lungs got
higher lower
A B
Exhaling, or breathing out, decreases the size of the chest, which increases air pressure inside the lungs.
air pressure inside the lungs
decreases
increases
LESS
MORE
the size of the chest
higher
lower
pressure in the patient's lungs
pressure in the patient's lungs
pressure in the patient's lungs