Heart structure and functions

In the walls of the heart, there are two thin layers around a thick layer of muscle called the

• epithelial tissue.

• pericardium.

• connective tissue.

• myocardium.

The purpose of heart valves is to 

• set the pace at which the heart beats
• prevent blood from flowing backward
• oxygenate the blood as it passes through the valve
• add minerals to the blood

Which number is the vena cava?

• 1

• 2

• 3

• 8

What does letter A represent?

• aorta

• left atrium

• left ventricle

• right atrium

Which letters carry deoxygenated blood?

• A, B, D
• G, A
• A, D
• B, C, D

What is the function of the heart?

• To pump blood throughout the body

• To filter waste from the blood

• To produce oxygen

• To regulate body temperature

How many chambers does the heart have?

• Two

• Three

• Four

• Five

Which chamber of the heart receives deoxygenated blood from the body?

• Right atrium

• Left atrium

• Right ventricle

• Left ventricle

What is the largest blood vessel in the body?

• Aorta

• Pulmonary artery

• Superior vena cava

• Inferior vena cava

Identify

• Pulmonary veins
• Pulmonary artery
• Aorta
• Vena cava