Olfactory Mucosa (Epithelium & lamina Propria)
Respiratory Mucosa (Nasal Mucosa) Physiology
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As air passes over the nasal mucosa, it is prepared or conditioned to safely pass deeper into the respiratory system.
- The heat radiated from the blood vessels in the lamina propria warms the air to near body temperature.
- Simultaneously, the watery mucus secreted from the goblet cells and seromucosal glands humidifies (= adds moisture) the air. It also traps foreign particles and keeps them from entering other parts of the respiratory tract.
- Wave-like beating of the epithelial cilia moves the debris-filled mucus to the throat, where it is usually swallowed.