According to the model of the human respiratory system, how do structures in the respiratory system interact to protect the lungs? How might a sinus infection affect the
rest of the respiratory system?

The respiratory system is made up of the airways (nose, mouth, pharynx, larynx, trachea, bronchi, and bronchioles) and the lungs, and it functions to supply the body with oxygen while getting rid of carbon dioxide.

Explanation:

A sinus infection can significantly affect the respiratory system, specifically the upper portions of the respiratory system. The sinuses are air-filled areas in the skull, located behind the forehead and cheeks. A sinus infection (also known as sinusitis) occurs when the lining of the sinuses gets infected and becomes inflammed and swells. It can also result in production of a lot of mucous in the sinuses. A sinus infection can lead to the following symptoms that affects the respiratory system:

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