Maxillary Sinus Drainage _verified_

Sinus cavity → Primary ostium → Ethmoidal infundibulum → Hiatus semilunaris → Middle meatus → Nasal cavity

Yellow or green mucus indicating stagnant fluid. maxillary sinus drainage

Proper drainage of the maxillary sinuses is crucial for maintaining their health and preventing various respiratory problems. The sinuses are prone to infection and inflammation, which can lead to conditions such as maxillary sinusitis, chronic sinusitis, and nasal polyps. When the sinuses become infected or inflamed, they can produce excessive mucus, leading to congestion, facial pain, and headaches. Sinus cavity → Primary ostium → Ethmoidal infundibulum