Respiratory System Describe the physical changes that take place in order for us to take air in (inspiration) and to push it out (expiration).

Respiratory System

1. Describe the physical changes that take place in order for us to take air in (inspiration) and to push it out (expiration). In your answer discuss the pressure changes which influence air movement.
2. Describe the physical properties that govern the diffusion of gases, including partial pressure and gas solubility.
3. Describe the factors influencing the exchange of gases between the alveoli and the pulmonary capillaries.
4. Describe how oxygen and carbon dioxide are carried in the blood stream.