1. The Heart - Structure Right ventricle Vena cavae Aorta Right atrium Pulmonary artery Pulmonary veins Left atrium Bicuspid valve Left ventricle Cardiac muscle

2. (A) (V) Lungs Heart Body How Blood is Pumped around the Body Blood flows around the body in a ‘figure of eight’ circuit, passing through the heart twice on each circuit. Blood travels away from the heart through arteries (A). Blood returns to the heart through veins (V). There are 2 separate ‘loops’ to the circuit: The top loop – carries blood from the heart to the lungs and back. The bottom loop – carries blood from the heart to all over the body and back. (A) (V)

3. The heart is divided into 2 parts. Each part is a pump, so the heart is a double pump. right side The right side pumps deoxygenated blood to the lungs to pick up oxygen. left side The left side pumps oxygenated blood to the rest of the body for use. From the lungs From the body To the lungs To the body How the Heart Pumps Blood

4. The Cardiac Cycle - How the Heart Beats

5. 1. 1.Blood leaves the right side of the heart via the pulmonary artery and goes to the lungs where it is oxygenated. 2. 2.It then travels back to the left side of the heart via the pulmonary vein. Pulmonary artery Pulmonary vein Body Heart Lungs Blood Flow around the Body – Top Loop

6. 3. 3.The left side of the heart then pumps the oxygenated blood around the rest of the body for use, via the aorta. 4. 4.Once the oxygen has been used, the blood becomes deoxygenated and returns to the right side of the heart via the vena cava. Vena Cava Aorta Blood Flow around the Body - Bottom Loop Body Heart Lungs