Chapter 19 - Respiratory System

Sep 07, 2011 · Unfortunately, infections and allergies can cause sinuses to become filled with a lot of mucus, they may become infected, and may even become clogged from draining into your nasal cavity. This condition is termed sinusitis, and certainly causes much discomfort. 2. Pharynx - Next, air passes into your throat (this is an open space) 3. ................
................