Explain how the structure of the lung enables rapid gas exchange?

The lungs have many alveoli which provide large surface area thus diffusion occurs quicker. The alveoli have walls that are one cell thick providing a short distance for diffusion. In addition, there is an extensive capillary network around the alveoli which provides large surface area for gas exchange. Also by circulation a high concentration gradient is maintained.

EP
Answered by Eleni P. Biology tutor

6766 Views

See similar Biology A Level tutors

Related Biology A Level answers

All answers ▸

Describe DNA replication. Is this process conservative?


How may nitrate from fertiliser entering lakes cause the death of fish in fresh water?


Why are enzymes affected by temperature?


How does water play a vital role in sustaining life?


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