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Lungs

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Overview of Lungs

The lungs, integral to the respiratory system, are complex organs responsible for vital functions essential for sustaining life. Structurally, they consist of two spongy, cone-shaped organs situated within the thoracic cavity, encased by the rib cage. Each lung is further divided into lobes – the right lung comprises three lobes, while the left lung has two. The lungs anatomy includes a network of airways branching off into smaller passages called bronchioles, ultimately culminating in clusters of tiny air sacs known as alveoli.

The process of respiration involves intricate mechanisms coordinated by the lungs. When we inhale, air enters through the nose or mouth, travels down the trachea, and branches into the bronchi, eventually reaching the bronchioles and alveoli. At this juncture, oxygen traverses the fine barriers of the alveoli and enters the blood vessels, whereas carbon dioxide, a metabolic byproduct, moves from the blood into the alveoli, awaiting exhalation.

This exchange of gasses is facilitated by the intricate network of blood vessels surrounding the alveoli, where oxygen binds to hemoglobin in red blood cells for transport throughout the body. As the blood circulates, oxygen is delivered to tissues and organs, supporting cellular functions and metabolism. Meanwhile, carbon dioxide is transported back to the lungs, where it is exhaled during exhalation.