Oxygen

inhale

What is the main function of the respiratory system?

What are the main organs of the respiratory system of human that allow us to breathe and for gas exchange to happen?

What is function of the dome-shaped diaphragm muscle?

your body couldn’t breathe without this system. Which one is it?

The respiratory system is made up of the trachea, the lungs, and the:

When you breathe in air, you bring oxygen into your lungs and blow out:

When you inhale, your lungs:

What is the name of the tiny air sacs in your lungs?

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