Respiratory System

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What is the name of the small flap of tissue that seals the trachea when you swallow?

Where in the respiratory system does gas exchange occur?

What excretory organ eliminates carbon dioxide from the body?

During gas exchange, what substance moves from the alveoli to the blood?

The dome-shaped muscle that pulls air into the lungs is the

What 2 things are eliminated from the body when you exhale?

What happens to cause air to be exhaled from the lungs?

Which parts of the respiratory system divide into smaller and smaller tubes?