The lungs are two saccular organs located in the thorax that make up the basic respiratory organ. They consist of an inverted tree of intricately branched bronchioles that communicate with thin-walled terminal alveoli surrounded by capillaries, where gas exchange occurs. The right lung has three lobes and the left has two. The lungs function to alter the pH of blood by changing carbon dioxide levels, filter small blood clots and gas micro-bubbles from venous blood.

1. LUNGS By: Shonta Gathings

2. LUNGS Two compound saccular organs that constitute the basic respiratory organ of airbreathing vertebrates, that normally occupy the entirelateral parts of the thorax and consist essentially of an inverted tree of intricately branched bronchioles communicating with thin walled terminal alveoli swathed in a network of delicate capillaries where the actual gaseous exchange.

3. The right lung has three lobes and the left lung has two.

5. filter out small blood clots formed in veins.

7. About 1 litre of air always stays in the lungs no matter how hard we breathe out.

8. In an average lifetime a person takes around half a billion breaths.

9. In both lungs of an adult there are about 300 million alveoli.

10. If all the different- sized air tubes in the lungs could be joined end to end they would stretch more than 50km.