Dr. Matt and Dr. Mike's Medical Podcast
Alveoli / Alveolus | A-Z of the Human Body
Feb 6, 2024
Discussion on alveoli, cup-like structures in lungs for gas exchange. Size and number of alveoli, surface area, and a tennis match anecdote. The structure and architecture of alveoli. Effects of cigarette smoke on alveoli.
10:44
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Quick takeaways
- The alveoli are cup-like structures within the lungs where gas exchange takes place, allowing oxygen to enter the bloodstream and carbon dioxide to be exhaled.
- The alveoli are small air sacs within the lungs that collectively create a surface area of around 80 square meters, facilitating efficient gas exchange with the surrounding capillaries.
Deep dives
Gas exchange in the LVO-line
The LVO-line is the cup-like structure within the lungs where gas exchange takes place. When we inhale, oxygen enters the lungs and moves into the LVO-line, where it crosses into the bloodstream. Simultaneously, carbon dioxide moves in the opposite direction, from the bloodstream into the LVO-line, to be exhaled. This gas exchange process is crucial for survival.
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