Respiratory System
The respiratory system is a vital system responsible for gas exchange between the body and its environment. The organs of the respiratory system include the nose, nasal cavity, paranasal sinuses, pharynx, larynx, trachea, bronchial tree, and lungs.
The functions of this system include:
- Cleaning, warming, and humidifying incoming air
- Sense of smell
- Production of vocal sounds
- Loading oxygen into the blood to be utilized by cells
- Unloading carbon dioxide from the blood as a waste product
Figure 1: The respiratory system.