Respiration

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The dome-shaped muscle that plays a role in breathing is the

Where in the respiratory system does gas exchange occur?

Which substances are produced during respiration?

Which chemical in tobacco smoke binds to hemoglobin ?

The role of the respiratory system is to bring what substance into the body?

Each alveolus is surrounded by a network of

During gas exchange, which substances move from the alveoli into the blood?

Name the condition in which smoking can irritate the breathing passages.