IGCSE Biology 9-1 - 2g Gas Exchange - Humans

New Edexcel IGCSE 9-1 4BI1 syllabus for 2017 first examined in 2019

This is a PowerPoint presentation for the topic - Section 2g Gas Exchange - Humans

2.46 describe the structure of the thorax, including the ribs, intercostal muscles, diaphragm, trachea, bronchi, bronchioles, alveoli and pleural membranes
2.47 understand the role of the intercostal muscles and the diaphragm in ventilation
2.48 explain how alveoli are adapted for gas exchange by diffusion between air in the lungs and blood in capillaries
2.49 understand the biological consequences of smoking in relation to the lungs and the circulatory system, including coronary heart disease
2.50 practical: investigate breathing in humans, including the release of carbon dioxide and the effect of exercise

The file is fully editable, has plenty of original diagrams and animations along with true false concept check questions at the end of the presentation and an exam style question.