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Gas exchange is the delivery of oxygen from the lungs to the bloodstream, and the elimination of carbon dioxide from the bloodstream to the lungs. It occurs in the lungs between the alveoli and a network of tiny blood vessels called capillaries, which are located in the walls of the alveoli.

This happens in the lungs between the alveoli and a network of tiny blood vessels called capillaries, which are located in the walls of the alveoli.

  • At the respiratory membrane, where the alveolar and capillary walls meet, gases move across the membranes, with oxygen entering the bloodstream and carbon dioxide exiting.

What are  capillaries?

  • Capillaries are tiny blood vessels that transport blood, nutrients and oxygen to cells in  organs and body systems.
  • Capillaries are the smallest blood vessels in  vascular system.

What is the function of capillaries?

  • These tiny blood vessels have thin walls.
  • Oxygen and nutrients from the blood can move through the walls and get into organs and tissues.
  • The capillaries also take waste products away from tissues.
  • Capillaries are where oxygen and nutrients are exchanged for carbon dioxide and waste.

To know more about capillaries here

https://brainly.com/question/14053121

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