Emphysema is a disease of the lungs. Explain why people suffering from this condition may feel weak and short of breath.(6 marks)

Emphysema is an obstructive lung disease(1), where alveoli collapse due to break down of elastin in their walls(2). This means that the lungs cannot recoil(3), making expiration difficult. There is less surface area and increased diffusion distance(4), thus reducing the diffusion gradient so less air leaves the lungs and less oxygen enters the blood(5). Therefore, a  person suffering from emphysema may feel weak and short of breath as they're taking in less oxygen into their tissues so less ATP/energy is produced(6).

SI
Answered by Sara I. Biology tutor

5678 Views

See similar Biology A Level tutors

Related Biology A Level answers

All answers ▸

Describe the synthesis of glomerular filtrate from the blood


Describe transcription:


Describe and explain how the alveoli are adapted to facilitate effective gas exchange in the lungs.


Briefly describe how the autonomic nervous system returns internal body temperature to normal following a rise in body temperature


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