1. Name and locate the lymphoid structures in the upper respiratory tract. 2. Describe the structure and function of the paranasal sinuses. 3. Describe how inhaled air may be altered as it passes...

1. Name and locate the lymphoid structures in the upper respiratory tract.

2. Describe the structure and function of the paranasal sinuses.

3. Describe how inhaled air may be altered as it passes through the nasal passages and pharynx.

d. Explain how allergens such as pollen affect the upper respiratory tract.