Breathing is an important process of our respiratory system and involves taking in of oxygen (inspiration) from atmospheric air and expulsion of carbon dioxide (expiration). Our respiratory system consists of nostrils, wind pipe or trachea, bronchi and bronchioles, lungs. Lungs are placed in a compartment made up of the ribs, the breast bone, back bone and help in respiration.
Short paragraph on Human Respiratory System
- Bharti Preeti