Circulatory System Science Olympiad

How many chambers does the mammalian heart have?

• 2

• 1

• 4

• 3

Which part of the heart receives blood?

• Atria

• Aorta

• Ventricles

• Pulmonary Artery

Which blood vessels are small and thin enough to allow for the diffusion of gases and nutrients into and out of circulation?

• Capillaries

• Venules

• Arterioles

• Veins

Identify the structure labeled at 1

• Pulmonary Vein

• Superior Vena Cava

• Inferior Vena Cava

• Pulmonary Artery

Identify the structure at 5

• Aorta

• Pulmonary Artery

• Superior Vena Cava

• Pulmonary Vein

Identify the structure at 8

• Pulmonary Artery

• Pulmonary Vein

• Inferior Vena Cava

• Aora

Identify the structure at 4

• Superior Vena Cava

• Pulmonary Artery

• Inferior Vena Cava

• Pulmonary Vein

Identify the structure at 6

• Superior Vena Cava

• Aorta

• Pulmonary Vein

• Pulmonary Artery

Identify the most muscular chamber of the heart that pumps oxygenated blood into systemic circulation.

• 2

• 3

• 6

• 9

Which number represents the right atrium?

• 3

• 2

• 6

• 9