The Five Parts

The Diaphrame - It is a dome shaped muscle that helps you breath

The Trachea - also known as the windpipe it leads to two large tubes

The Bronchi - It is two large tubes , main stem, one into left one into right lung

The Lungs - Used to inhale and exhale oxygen

Alveoli- 600 million if stretched, it is a mesh like surface covering small blood vessels called capillaries