Yes: No protection from organisms and dust is offered by the nasal passage and the pharyngeal regions. Sinuses also help in ventilation process as well as adjusting the temp of the breathed 'hot' or 'cold' air..
Answered 10/4/2016
5.4k views
4 doctors weighed in across 2 answers
A doctor has provided 1 answer
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question