The second loop in the system involves the blood now being pumped from the left ventricle around the body.
The aorta in turn, arises from the left ventricle which is the main pumping chamber of the heart.
The left ventricle pumps blood through the arteries to the body.
This forces blood into the left atrium right atrium left ventricle right ventricle which then contracts.
The aorta is the large artery that takes blood from the left ventricle of the heart to the body.