| Flap 1 |
Flap 2 |
| Turbinates | 3 boney protrusions on the lateral walls of the nasal cavity. Superior, middle, and inferior nasal turbinates or conchae. |
| The anterior 1/3 of the nose is lined with? | Stratified squamous epithelium |
| The posterior 2/3 of the nasal cavity is lined with? | Pseudostratified ciliated columnar epithelium |
| Vibrissae | Nose hair |
| Tracheobronchial Tree's first line of defence | Vibrissae |
| Functions of the nose | Filter, humidify, and warm air. Sence of smell. Resonance chamber for fonation. |
| Upper Airway | Above vocal cords |
| Lower airway | Below vocal cords |
| Primary functions of upper airway. | Act as conductor of air, humidify and warm air, prevent foreign materials from entering tracheobronchial tree, speech and smell. |
| The Tracheobroncial tree is lined in? | Pseudostratified ciliated columnar epithelium. |
| Tight space | Area between alveoli epithelium and pulmonary capillary endothelium. |
| Loose space | Surrounds the bronchioles, respiratory bronchioles, alveolar ducts and sacs. This space has lymph vessels. |
