Topics
Describing the structure of the thorax, including the ribs, intercostal muscles, diaphragm, trachea, bronchi, bronchioles, alveoli and pleural membranes
Understanding the role of the intercostal muscles and the diaphragm in ventilation
Explaining how alveoli are adapted for gas exchange by diffusion between air in the lungs and blood in capillaries.
Understanding the role of diffusion in gas exchange.
Understanding the biological consequences of smoking in relation to the lungs and the circulatory system, including coronary heart disease.
Practical tasks
Investigating breathing in humans, including the release of carbon dioxide and the effect of exercise
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