Circulation, Respiration and Breathing

Aims

• To show the main parts of the circulatory system and heart
• To illustrate the relationship between arteries, veins and capillaries
• To illustrate the principle of a double circulation
• To illustrate gas exchange through diffusion in the lungs and the tissues
• To show the main parts of the respiratory system
• To explain the process of ventilation
• To examine how the rate of ventilation is controlled and modified by the brain
• To consider the factors contributing to oxygen debt
• To explore the effects of cigarette smoking on the lungs.