Upper respiratory tract

Definition

The upper respiratory tract consists of the nose, nasal cavity, sinuses, pharynx, and larynx. It plays a critical role in filtering, warming, and humidifying the air we breathe before it reaches the lower respiratory tract.

5 Must Know Facts For Your Next Test

1. Proper nutrition can enhance the immune function of the upper respiratory tract and help prevent infections.
2. A diet rich in antioxidants (e.g., vitamins A, C, and E) supports mucosal immunity in the upper respiratory tract.
3. Dehydration can impair mucociliary clearance in the upper respiratory tract, increasing susceptibility to infections.
4. Omega-3 fatty acids have anti-inflammatory properties that may benefit those with chronic conditions affecting the upper respiratory tract.
5. Excessive intake of processed foods high in sugar and fats can compromise immune responses in the upper respiratory tract.

Review Questions

• How does proper hydration impact the function of the upper respiratory tract?
• Which vitamins are known to support mucosal immunity in the upper respiratory tract?
• What are the potential benefits of omega-3 fatty acids for individuals with chronic conditions affecting their upper respiratory tracts?

Related terms

Mucociliary Clearance: The mechanism by which mucus and trapped particles are moved out of the lungs and bronchi through ciliary movement.

Antioxidants:

Compounds that inhibit oxidation and can neutralize free radicals, thereby supporting immune health.

Pharynx:

The membrane-lined cavity behind the nose and mouth, connecting them to the esophagus.