★ The Respiratory System Quiz
When you breathe, your lungs take in ___ and release ___.
A. air/oxygen
B. oxygen/carbon dioxide
C. carbon dioxide/waste
D. waste/air
Preview next quiz:
What are bronchi?
A. connects the brain and spinal cord
B. number of protons
C. part of earth and supports life
D. 2 short tubes that branch off of the lower end of the trachea and carry air to the lungs
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