Vestibule Region of the Nasal Cavity
Nasal mucosa (respiratory mucosa): gross and microscopic anatomy
Inside the nasal cavity, the surfaces of the turbinate bones (= nasal conchae) and meatuses are lined by respiratory mucosa (= nasal mucosa).
An expanded view of the respiratory mucosa shows more detail about its layered composition.
The densely packed cells in the epithelium are embedded in a thin, adhesive sheet called the basement membrane. Deep to the basement membrane is a thicker layer of loose connective tissue called the lamina propria. Many blood vessels and seromucosal glands are also present in the lamina propria.
Identify and solve the holes in your respiratory system anatomy knowledge using these interactive quizzes and worksheets.
Micrograph of respiratory mucosa:
Physiology of the Respiratory Mucosa (Nasal Mucosa)
- 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.
Test your respiratory system knowledge from every angle using these interactive quizzes and worksheets.
An Overview of the Respiratory Mucosa:
Interactive quiz about the nasal mucosa and the layers of the nasal cavity
Nasal Cavity Quiz: Surface Lining and Layers