In the Name of Allah, the Most Beneficent, the Most Merciful.

{And also in your own selves. Will you not then see?}  

                                                                                       51. Az-Zariyat

- The lungs weigh on average 1000 grams in an adult.

- The surface area of the lungs is roughly thesame size as a tennis court.

- An estimated 90% of the lungis filled with air and only 10% is hard tissue.

- The lungs are the only organ in the body thatcan float on water.

- Each lung contains 300-350 million respiratory units called alveoli.

- More than 0.5 a liter ofwater per day is lost through breathing.

- Yawning brings more oxygen to the lungs.

- At rest, an adult breathes about 14 to 16 times per minute. After exercise this canincrease to over 60 times per minute.

- Each day an average person breathes about 25,000 times, and by the time a person reaches 70 years old, they will have taken at least 600 million breaths.

- In the course of a single day, 8,000 to 9,000 litres of breathed-in air meets 8,000 to 10,000 litres of blood pumped in by the heartthrough the pulmonary artery.

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 Atherosclerosis ... 

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