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Circulatory System: Alveoli 🫁 GCSE Biology Learning & Revision
Manage episode 491989035 series 3139280
Content provided by Seneca Learning. All podcast content including episodes, graphics, and podcast descriptions are uploaded and provided directly by Seneca Learning or their podcast platform partner. If you believe someone is using your copyrighted work without your permission, you can follow the process outlined here https://ppacc.player.fm/legal.
In this episode, we will discuss the alveoli in the circulatory system.
Alveoli are microscopic air sacs within the lungs where the crucial exchange of oxygen and carbon dioxide occurs between air and blood through diffusion.
Their structure is highly adapted for this vital process, featuring a vast surface area and an extensive network of surrounding capillaries that ensure a rich blood supply and minimal diffusion distance.
Deoxygenated blood flows to the alveoli, where it releases carbon dioxide and absorbs oxygen before returning to the body as oxygenated blood.
Notably, in some marine mammals like whales, alveoli function differently during deep dives, temporarily shutting down as these animals rely on stored oxygen.
Don't miss out on subscribing for more educational content tailored to help you succeed in your exams. Perfect for AQA, OCR, Edexcel, CIE and WJEC exam boards.
192 episodes
Share
Manage episode 491989035 series 3139280
Content provided by Seneca Learning. All podcast content including episodes, graphics, and podcast descriptions are uploaded and provided directly by Seneca Learning or their podcast platform partner. If you believe someone is using your copyrighted work without your permission, you can follow the process outlined here https://ppacc.player.fm/legal.
In this episode, we will discuss the alveoli in the circulatory system.
Alveoli are microscopic air sacs within the lungs where the crucial exchange of oxygen and carbon dioxide occurs between air and blood through diffusion.
Their structure is highly adapted for this vital process, featuring a vast surface area and an extensive network of surrounding capillaries that ensure a rich blood supply and minimal diffusion distance.
Deoxygenated blood flows to the alveoli, where it releases carbon dioxide and absorbs oxygen before returning to the body as oxygenated blood.
Notably, in some marine mammals like whales, alveoli function differently during deep dives, temporarily shutting down as these animals rely on stored oxygen.
Don't miss out on subscribing for more educational content tailored to help you succeed in your exams. Perfect for AQA, OCR, Edexcel, CIE and WJEC exam boards.
192 episodes
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