Question

Match the organ to the number showing the order of blood flow in the circulatory system.

Start with what happens after the heart pumps blood to the body's cells.
Blood with oxygen

Blood with carbon dioxide.

Heart with deoxygenated blood.

Lungs

Heart with oxygenated blood

Answer 1

What sends oxygenated blood back to the heart from the lungs?

Oxygen-rich blood flows from the lungs back into the left atrium (LA), or the left upper chamber of the heart, through four pulmonary veins. Oxygen-rich blood then flows through the mitral valve (MV) into the left ventricle (LV), or the left lower chamber.

Step-by-step explanation: