- Lung capillaries: Deoxygenated to oxygenated. Blood picks up oxygen from alveoli and releases carbon dioxide.
- Body capillaries: Oxygenated to deoxygenated. Blood delivers oxygen to tissues and collects carbon dioxide waste.
- Right atrium → Superior vena cava / Inferior vena cava
- Left atrium → Pulmonary veins
- Right ventricle → Pulmonary arteries
- Left ventricle → Aorta
- Pulmonary veins → Left atrium
- Pulmonary arteries → Lungs
- Right atrium ← Superior vena cava / Inferior vena cava
- Left atrium ← Pulmonary veins
- Right ventricle ← Right atrium
- Left ventricle ← Left atrium
- Pulmonary veins ← Lungs
- Pulmonary arteries ← Right ventricle
Blood could flow backward, reducing efficiency of circulation, causing strain on the heart, and potentially leading to heart failure or other complications.
Pulmonary circulation moves blood between the heart and lungs for gas exchange. Systemic circulation moves oxygenated blood from the heart to the body and returns deoxygenated blood back to the heart.
Parent Tip: Review the logic above to help your child master the concept of the human heart anatomy and circulation worksheet.
