What are the similarities between the circulatory system and a circuit?

Answer 1

The pulmonary circulation is the portion of the cardiovascular system which carries oxygen-depleted blood away from the heart, to the lungs, and returns oxygenated blood back to the heart while for the systemic circulation, it is the portion of the cardiovascular system which carries oxygenated blood away from the heart, to the body, and returns deoxygenated blood back to the heart... :D

Answer 2

Both humans and pigs have a closed circulatory system that originates at the heart, flows through arteries until it reaches capillaries at the extremities and returns to the heart through veins. The main difference in pigs and humans lies in how the Iliac and Carotid arteries are set up.

Answer 3

Blood moves through the body in a continuous circuit. Put simply, oxygenated blood enters the hearts from the lungs, the heart then pushes it through arteries that go all over the body delivering blood to cells. Once the blood cells have become deoxygenated, they then go back to the right side of the heart via veins, and from there they enter the lungs again to pick up more oxygen. Therefore, the blood cells have completed a circuit from the lungs to the heart, throughout the human body, and then back to the heart and lungs.