Describe and explain how air enters the lungs during inspiration

The diaphragm contracts and flattens out, increasing the volume of the thorax and decreasing the pressure in there. This causes a pressure gradient between the thorax and the outside air, so air flows into the lungs from the outside.

Answered by Adithya K. Biology tutor

2285 Views

See similar Biology A Level tutors

Related Biology A Level answers

All answers ▸

Describe how the hormone glucagon helps a healthy individual to maintain their blood glucose concentration correctly.


Why does oxygen bind to haemoglobin easier the second time?


Colour blindness is a recessive trait caused by an error in the X chromosome. A couple without color blindness are expecting their second child. Their first child was born colour blind. What is the probability of their second child being colour blind?


What are the key stages in phagocytosis?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences