10 Interesting Fact About The Biology of the Human Lungs

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• Human lungs consist of millions of small bubbles called alveoli. This alveoli allows oxygen to enter the blood and carbon dioxide comes out of the blood.
• Human lungs have 2 lobes in the left lungs and 3 lobes in the right lungs.
• Human lungs can stretch and shrink to regulate breathing. This is controlled by the muscles around the lungs.
• Human lungs have a protective layer called surfactant. This layer helps prevent alveoli from damage and collapse.
• When someone sneezes, the air comes out of the nose and mouth at a speed of about 965 km/hour.
• Human lungs are able to adjust to height. At a higher height, human lungs can absorb more oxygen to compensate for low pressure.
• Human lungs have a total capacity of about 6 liters of air.
• Human lungs can produce sound when we speak or sing. This happens when the air passes through the vocal cords in the larynx.
• When someone smokes, toxins in cigarette smoke can damage the lungs and cause many health problems such as lung cancer and chronic obstructive pulmonary disease (COPD).
• Human lungs have a natural defense system called the lung immune system. This system helps protect the lungs from infection and disease.