Question

2. What is the job of the human body's pulmonary circuit?

To pump the blood through your blood vessels.
To carry blood to the lungs so carbon dioxide can be released and oxygen can be picked up.
To carry oxygen to the trillions of cells in your body.
To return deoxygenated blood to the heart.
To supply your body with nutrients needed for cellular activity.

Answer 1

B) to carry blood to the lungs so carbon dioxide can be released and oxygen can be picked up.
The pulmonary circuit basically carries deoxygenated blood that leaves the right atrium of the heart so it can pick up oxygenated blood from the lungs; then the oxygen-rich supply returns back to the heart entering the left atrium.