Below is a diagram of the respiratory system. Identify each of the numbered components and add small notes (annotations) to describe the function of each of the structures identified:
Give four features of the alveoli that encourage efficient gas exchange. (100 words)
Explain how the trachea is structured for its function. (100 words)
In no more than 100 words, explain how each of the following structure change during one breathing cycle (breathing in, then out).