★ The Respiratory System Quiz
The air sacs that are covered with capillaries where gas exchange takes place are found in..?
A. bronchi
B. lungs
C. oxygen
D. alveoli
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What is a diaphragm?
A. Muscle beneath the lungs that contacts and relaxes to move gases in and out of the body
B. Factor during an experiment
C. Filters blood
D. Deoxyribose acid
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