The Heart

The heart is a muscular pump.

• True

• False

The heart is made up of special cardiac muscles which contracts regularly without tiring.

• True

• False

Which stage of the heart does the following represents?

a. Blood flows into the heart when it is between beats and relaxed.

b. Deoxygenated blood from our body enters the right atrium through the two vena cava veins.

c. At the same time newly oxygenated blood from our lungs enters the left atrium through the pulmonary veins.

• Stage 1

• Stage 2

• Stage 3

• Stage 4

Which part of the heart does 5 represent?

• Aorta

• Pulmonary Valve

• Atrium

• Ventricle

Which part of the heart does 2 represent?

• Right Atrium

• Right Ventricle

• Left Atrium

• Left Ventricle

Which part of the heart does 1 represent?

• Right Ventricle

• Right Pulmonary Vein

• Superior Vena Cava

• Inferior Vena Cava

Which part of the heart does 8 represent?

• Left Atrium

• Left Pulmonary Arteries

• Left Pulmonary Veins

• Left Ventricle

The arrow indicates the

• Right atrium
• Left ventricle
• Right ventricle
• Left atrium

The arrow indicates the 

• Left ventricle
• Pulmonary artery
• Right atrium
• Pulmonary veins

The arrow indicates the

• Right ventricle
• Pulmonary artery
• Left ventricle
• Right atrium