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

3084 Views

See similar Biology GCSE tutors

Related Biology GCSE answers

All answers ▸

Human body temperature is kept within a narrow range. When the core body temperature is too low, this is detected by the thermoregulatory centre in the brain. Describe how the body responds when a decrease in core body temperature is detected.


What is homeostasis and give an example


What is the difference between Mitosis and Meiosis?


What is a myocardial infarction?


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