Infections and allergies may affect the condition of sinuses. Sinuses are usually cavities within the skull. The cavities are situated above the eyes and they connect the nasal cavities. The surfaces of sinuses are characterized by the presence of cilia. The microscopic hairs serve the purpose of cleaning the cavities. In addition, the cilia facilitate the movement of mucus within this hour.
Tags: | earrings | nutrition | photography | online education | widgets | computers | teaching english |
Share →
