Fill in the Blanks The circulatory systemOnline version Gap-fill by Amelia A 1 oxygen muscle pushes chambers ventricles nutrients chest receives oxygen pumps body atrium body carbon dioxide lungs lungs waste The heart is a located in the . The heart blood around your body . The blood provides your body with the and it needs . It also carries away . The right side of your heart receives blood with from the body and pumps it to the . The left side of the heart does the exact opposite : It receives blood with from the lungs and pumps it out to the . The heart is made up of four different areas , called . There are two of them on each side of the heart . The two on the top are called . The right atrium blood from the body . The left atrium receives blood from the . The two chambers on the bottom are called the . The right ventricle blood to the lungs . The left ventricle pushes blood to the .