Topic 11 of 21 · 1 modules planned

Gas exchange in humans

How the lungs move air and exchange gases, and how breathing responds to exercise.

Modules

Module 1 · syllabus 11.1
Gas exchange and breathing
What changes in the air you breathe out?
This module is planned. It will have readings, an experiment, practice with self-checks and a final check.

Syllabus statements for this topic · for teachers · 11 statements

Core for every pupil · Supplement also for Extended entry. Paraphrased from the Cambridge IGCSE Biology 0610 syllabus (2026–2028); check the official syllabus for exact wording.

11.1 Gas exchange in humans

11.1.1Features of human gas exchange surfacesC
11.1.2Identify parts of the breathing systemC
11.1.3Investigate inspired and expired air with limewaterC
11.1.4Composition of inspired and expired airC
11.1.5Investigate exercise and breathing rate and depthC
11.1.6Identify internal and external intercostal musclesS
11.1.7Function of cartilage in the tracheaS
11.1.8Ribs, intercostals and diaphragm in ventilationS
11.1.9Explain inspired and expired air differencesS
11.1.10Carbon dioxide, the brain and breathing during exerciseS
11.1.11Goblet cells, mucus and cilia protect airwaysS