What is the relationship between nasal blood vessels and nasal airflow? What are the implications?

• A. Nasal airflow is independent of nasal blood vessels.
• B. Nasal airflow is regulated solely by nasal cartilage.
• C. Nasal blood vessels influence nasal airflow; nasal airflow is regulated by autonomic and central controls.
• D. Nasal airflow is only affected by humidity.

Answer: (C)