Question

The Respiratory System contains which of the following body parts?

Heart, lungs and mouth
Ear, nose and throat
Nose, trachea and lungs
All of the above

Answer 1

Your nose, mouth and eyes are obvious entry points for pathogens. However, tears, mucus and saliva contain an enzyme that breaks down the cell wall of many bacteria. Those that are not killed immediately are trapped in mucus and swallowed. Special cells line and protect the nose, throat and other passages within your body. The inner lining of your gut and lungs also produces mucus to trap invading pathogens.Explanation:

Answer 2

There are 3 major parts of the respiratory system: the airway, the lungs, and the muscles of respiration