Explain the role of the diaphragm in breathing out

The external intercostal muscles contract which moves the diapraghm upwards. This reduces the volume of the thorax and therefore with less space, the pressure in the lungs goes up. The pressure in the lungs will now be higher than outisde and becuase of this difference, air will move out causing exhalation (breathing out). 

Answered by Kai A. Biology tutor

12185 Views

See similar Biology A Level tutors

Related Biology A Level answers

All answers ▸

Describe and explain the mechanism behind the specificity of enzyme reactions.


What is the role of the rough endoplasmic reticulum and the Golgi apparatus in protein transport within cells?


Explain how can barren land be made habitable in reference to succession.


What is taxonomy?


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