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Lung alveoli

Lung alveoli


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Science Photo Library

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Lung alveoli

Lung alveoli. Light micrograph of a section through normal human lung tissue showing alveoli. These are tiny air sacs where most of the diffusion of gases to and from the blood occurs. They have thin walls (red) lined with capillaries (not seen). Inhaled oxygen diffuses into the blood in these capillaries, and carbon dioxide is released and exhaled. The oxygenated blood travels to the heart where it is pumped around the body, releasing its oxygen and picking up carbon dioxide before returning to the lungs. Magnification unknown

Science Photo Library features Science and Medical images including photos and illustrations

Media ID 6450093

© CNRI/SCIENCE PHOTO LIBRARY

Alveoli Alveolus Breathing Histological Histology Lung Lungs Microscope Net Work Respiration Respiratory System Slide Light Micrograph Section Sectioned


EDITORS COMMENTS
This print from Science Photo Library showcases the intricate beauty of lung alveoli, the tiny air sacs within our lungs. The image, captured using a light microscope, provides a glimpse into the remarkable network that enables efficient gas exchange in our respiratory system. The vibrant red walls of these alveoli are incredibly thin and delicately lined with capillaries, although not visible in this particular micrograph. It is within these microscopic structures that the crucial diffusion of gases takes place – oxygen entering the bloodstream while carbon dioxide is released and exhaled. As we breathe in, oxygen molecules effortlessly diffuse through these thin walls into the surrounding capillaries. This freshly oxygenated blood then embarks on an incredible journey to our heart where it will be pumped throughout our body. Along its path, it releases its life-sustaining cargo of oxygen and picks up carbon dioxide waste before returning to the lungs for another round. The magnification used to capture this mesmerizing image remains unknown; however, what is evident is how intricately designed and interconnected our bodies truly are. This histological masterpiece serves as a reminder of just how vital each breath we take truly is for sustaining life itself.

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