What are the three types of respiration in which the circulatory system transports gases?

1. External respiration: This is the exchange of oxygen and carbon dioxide between the lungs and the blood. Oxygen is taken in from the air into the lungs and carbon dioxide is released from the blood into the lungs to be exhaled.

2. Internal respiration: This is the exchange of oxygen and carbon dioxide between the blood and the body's tissues. Oxygen is released from the blood into the tissues for cellular respiration, and carbon dioxide is taken up by the blood to be transported back to the lungs.

3. Cellular respiration: This is the process by which cells use oxygen to produce energy in the form of ATP, and release carbon dioxide as a waste product. The circulatory system transports oxygen to the cells and removes carbon dioxide from them.

1. Pulmonary respiration
2. Cutaneous respiration
3. Branchial respiration