Explain the exchange of oxygen between an alveolus and a capillary.

The blood in the capillary has just returned to the lungs from the rest of the body, so contains a low concentration of oxygen. The alveolus contains air that has just been breathed in by ventilation, so it has high concentration of oxygen. Oxygen diffuses out of the alveolus and into the capillary.

AD
Answered by Anastasia D. Biology tutor

3089 Views

See similar Biology GCSE tutors

Related Biology GCSE answers

All answers ▸

I don't understand the difference between DNA, genes and chromosomes?


Explain why it is important to take a full course of prescribed antibiotics.


How does the structure of the red blood cell allow it to carry out its functions?


How are enzymes involved in digestion?


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning