Major artery at the top of the heart sends oxygenated blood from the left ventricle to the rest of the body.

• aorta
• pulmonary artery
• inferior vena cava

About how large is the human heart?

• the size of an onion
• the size of a fist
• 4.5 pounds

Your heart is an involuntary muscle that is always working.

• True

• False

The heart is made of which of the following types of muscles?

• Cardiac muscle

• Striated muscle

• Smooth muscle

• None of the above

Which of the following are chambers of the heart?

• Valves

• Atrium and ventricle

• Arteries and veins

• Sinoatrial nerve

Which of the following is true about your heart?

• Your heart may stop beating from time to time.

• You have to think in order to keep your heart beating.

• Your heart pushes blood through your body.

• All of the above

Pumps oxygen-poor blood to the lungs

• Right Ventricle
• Right Atrium
• Left Ventricle
• Left Atrium

A flap of tissue that prevents blood from flowing backward

• Aorta
• Atrium
• Septum
• Valve

What is the arrow pointing to?

• vena cava

• mitral valve

• tricuspid valve

• aorta

The right side of the heart contains...

• Oxygenated Blood

• De-oxygenated Blood

• Both Oxygenated and De-oxygenated Blood

• Water