Front

What gas do we breathe when we exhale?

Back

carbon dioxide

Front

What connects the larynx to the lungs?

Back

trachea

Front

This is a gas our cells need to survive.

Back

oxygen

Front

The flap of skin that prevents food and water from entering the trachea.

Back

epiglottis

Front

What is the function of the respiratory system?

Back

provide us with oxygen and remove carbon dioxide

Front

What organ does oxygen begin to enter the blood stream? Options: nasal cavity, lungs, bronchioles, alveoli

Back

alveoli

Front

What is the order that oxygen travels when it is inhaled?

Back

nasal cavity, pharynx, trachea, bronchi tubes, alveoli