The Human Circulatory System

Name the heart chamber labelled as number 3.

• Right atrium

• Right ventricle

• Left atrium

• Left ventricle

Name the blood vessel labelled as number 1.

• Pulmonary artery

• Pulmonary vein

• Vena cava

• Aorta

Name the blood vessel labelled as 7.

• Pulmonary artery

• Pulmonary vein

• Vena cava

• Aorta

Why is the cardiac muscle around the left side of the heart larger than the right side?

• Because the blood is oxygenated

• Because the coronary arteries are larger

• Because the left side has to pump blood to the whole body

• Because the right hand side only pumps blood to the lungs

What is the function of the septum?

• To help push blood around the body

• To stop deoxygenated blood and oxygenated blood from mixing

• To send electrical signals to the cardiac muscle

• To help thicken the blood

What are the function of valves in the heart?

• To oxygenate the blood

• To thicken the blood

• To thin the blood

• To keep blood flowing in one direction

Where would the pulmonary artery take blood?

• To the lungs

• Away from the heart

• Towards the heart

• Away from the lungs

The blood vessel that takes oxygenated blood from the lungs back to the heart is the __________________ vein?

Your heart beats how many times a day?

• 10 000 times

• 50 000 times

• 100 000 times

• 200 000 times

Tags

NGSS.MS-LS1-3

Compared to a woman's heart, a man's heart......

• Is smaller

• Is larger

• Beats faster

• Beats slower