The function of the human respiratory system is to transport air into the lungs and to facilitate the diffusion of Oxygen into the blood stream. Its also receives waste Carbon Dioxide from the blood and exhales it.
What is the Respiratory System?
The respiratory system consists of the following parts, divided into the upper and lower respiratory tracts:
Parts of the Upper Respiratory Tract
- Mouth, nose & nasal cavity: The function of this part of the system is to warm, filter and moisten the incoming air
- Pharynx: Here the throat divides into the trachea (wind pipe) and oesophagus (food pipe). There is also a small flap of cartilage called the epiglottis which prevents food from entering the trachea
- Larynx: This is also known as the voice box as it is where sound is generated. It also helps protect the trachea by producing a strong cough reflex if any solid objects pass the epiglottis