1.1 Explain the relationships between structure and function in the anatomy of the pulmonary tract and lungs
1.2 Analyse the ventilation of the human lungs
1.3 Explain gas exchange from alveolus to pulmonary capillary
1.4 Explain observations of changes in heart rate and ventilation rate, for example, in response to walking up steps
2.1 Explain the feedback mechanisms that control ventilation


3.1 Explain the structure and transport functions of the systemic, pulmonary and lymphatic systems and the cardiac cycle

3.2 Analyse the short term control of blood pressure and heart rate, for example, in response to changes in posture and exercise
3.3 Explain how oxygen and carbon dioxide are carried by the blood stream and exchanged with tissues
3.4 Explain the maintenance of blood gas concentrations and pH values during exercise