erythrocytes and plasma

• erythrocytes transport oxygen via haemoglobin to body tissues
• plasma transports carbon dioxide (produced by respiration to the lungs)
• 1 inspiration, breathing in
• 2 exchange of gases from lungs to blood
• 3 transport of oxygen and carbon dioxide in blood
• 4 exchange of gases from blood to tissues
• 5 metabolism
• 6 expiration