- The image depicts the human heart with its major blood vessels and chambers.
- Blue arrows indicate deoxygenated blood flow: entering the right atrium via the superior and inferior vena cava, moving to the right ventricle, and then being pumped to the lungs via the pulmonary artery.
- Red arrows indicate oxygenated blood flow: returning from the lungs via the pulmonary veins to the left atrium, moving to the left ventricle, and then being pumped out to the body via the aorta.
- This illustrates the two main circulatory loops: pulmonary circulation (heart to lungs and back) and systemic circulation (heart to body and back).
Parent Tip: Review the logic above to help your child master the concept of how blood travels through the body worksheet.