Which letter(s) show the atria?

• 1 and 4

• 2 and 9

• 6 and 12

• 8

What is number 6?

• Right atrium

• Right ventricle

• Left atrium

• Left ventricle

What do the arrows inside the heart show?

• The movement of air within the heart

• The parts of the heart that use glucose

• The parts of the heart responsible for the heart beat you can hear with a stethoscope

• The direction of blood flow through the heart

Artery B takes blood to the lungs. What is it called?

• pulmonary vein

• aorta

• pulmonary aorta

• pulmonary artery

Name blood vessel c

• Aorta

• pulmonary artery

• pulmonary vein

• vena cava

Which letter is the left ventricle?

• E

• G

• F

• H

What are the numbers 3, 5, 11 and 13 pointing to?

• the atria

• the ventricles

• valves

• veins

Which type of blood vessels are 1, 4 and 8?

• Arteries

• Capillaries

• Veins

Which parts not labelled on the diagram stop the back flow of blood?

• the septum

• valves

• elastic tissue

• muscle tissue

What do the yellow parts of this diagram show?

• the atria

• the ventricles

• the vena cava

• the pulmonary veins