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

5560 Views

See similar Biology A Level tutors

Related Biology A Level answers

All answers ▸

How do expiration and inspiration occur by the action of the lungs?


What is an immobilised enzyme and what are the advantages of their use?


Explain why podocytes are usually unable to undergo mitosis.


Describe the events that take place at the synapse that enable transmission of a nerve impulse.


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences