The Human Heart

What is the function of the heart?

• Works with the bones to help us move

• Gives us shape and structure

• Sends oxygenated blood through the body

• Sends sensory information to the brain

Your heart is an involuntary muscle that is always working. Remember involuntary means you don't have to think about it!

• True

• False

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NGSS.MS-LS1-3

How are arteries and veins different?

• One is bigger than the other.

• The arteries carry more blood than the veins.

• The arteries carry blood away from the heart while veins carry blood to the heart.

• The veins carry blood away from the heart while arteries carry blood to the heart.

What does your heart do?

• Pump blood with carbon dioxide through your body

• Give your body energy

• Pump blood with oxygen through your body

• Tells our brain what to do

This type of vessel carries blood away from the heart.

• Blood cells

• Veins

• Capillaries

• Arteries

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NGSS.MS-LS2-3

This type of vessel carries deoxygenated blood to the heart. Deoxygenated means oxygen has been removed.

• Arteries

• Veins

• Capillaries

• Vena Cava

The heart pumps blood to get ________ to our cells.

• carbon dioxide

• diseases

• oxygen

Which statement is TRUE about our heart rate?

• When we are resting, our heart beats faster than when we are moving around.

• When we are resting, our heart beats slower than when we are moving around.

• Our heart beats at the same rate all the time.

• When we are resting, our heart stops beating, but when we are moving, our heart rate starts beating.

A flap of tissue that prevents blood from flowing backward

• Aorta
• Atrium
• Septum
• Valve

How many chambers does the heart have ? 

• 4
• 6
• 3
• 1