What are the major organs of the respiratory system?

Red blood cells have a special protein where oxygen molecules from the alveoli of the lungs stick/ attach to so that it can be transported to the body cells. What is this protein called?

Pneumonia is an infection which allows pus to build up in the __________. *bronchus, alveoli, trachea, bronchiole*

What is the other term for trachea?

Why do small kids like toddlers have high pitch voices?

Where are vocal cords found?

Which property of the alveoli enables the lungs to absorb a great amount of oxygen? *a moist lining* *dense with blood vessels* *large surface area*

TRUE/FALSE: When you take in air, your chest cavity expands.

The nasal passages are lined with hairlike structures called cilia. What is the main function of these cilia?

TRUE/FALSE: The less oxygen you need, the faster you will breathe.

In what specific blood vessel does gas exchange occur?

The term COVID in COVID-19 means ___(complete term)___.