Movements of Respiratory Gases

1. Carbon Dioxide

1.1. Waste product of tissues

1.2. Picked up by hemoglobin

1.3. Transported back to the lungs

1.4. Diffuses into the alveoli from blood

1.5. Exhaled from the lungs and out of the body

2. Oxygen

2.1. Air enters the body

2.2. Air moves to the lungs

2.3. Air filters down to the alveoli

2.4. Oxygen diffuses out to the blood

2.5. Hemoglobin binds to oxygen in red blood cells

2.6. Oxygen is delivered to tissues