Respiratory System The main function of the respiratory system is to provide gas exchange between the blood and the air. When air is inhaled, the lungs remove oxygen from the air. Carbon dioxide is exhaled back into the environment.

Respiratory System

Starts with your NOSE… Collects air Moistens & heats air Then it enters the trachea

…TRACHEA… “windpipe” Moves air from nose to lungs

…BRONCHI… Tubes that move air from nose to lungs One bronchus leads to each lung Part of each bronchus is inside the lung & part is outside the lung

…LUNGS… MAIN ORGANS where gases are exchanged between air & blood Alveoli Inside lungs Where gas exchange takes place

…DIAPHRAGM Muscle that helps with breathing process Allows the rib cage to expand