Understanding the Human Heart

Where is the heart located in the human body?

• In the lower abdomen

• Directly in the center of the chest

• Slightly left of center in the chest

• Slightly right of center in the chest

What is the main function of the cardiovascular system?

• To produce hormones

• To control body temperature

• To circulate blood and oxygen around the body

• To digest food

How many times does the heart beat in one day?

• 100,000 times

• 50,000 times

• 200,000 times

• 10,000 times

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CCSS.3.OA.A.3

Which side of the heart handles oxygen-poor blood?

• Left side

• Right side

• Both sides

• Neither side

What is the role of the pulmonary arteries?

• To carry oxygen-rich blood to the body

• To carry oxygen-poor blood to the lungs

• To carry nutrients to the heart

• To remove waste from the heart

Which valve is NOT one of the four main heart valves?

• Tricuspid valve

• Bicuspid valve

• Pulmonary valve

• Mitral valve

What happens during systole?

• The ventricles contract

• The heart stops

• The heart relaxes

• The atria contract

What is the function of the coronary arteries?

• To regulate heartbeats

• To remove waste from the heart

• To supply the heart with oxygen-rich blood

• To carry blood to the lungs

Where do electrical impulses in the heart begin?

• In the right atrium

• In the left atrium

• In the aorta

• In the ventricles

What keeps the heart beating in a coordinated and normal rhythm?

• The aorta

• The pulmonary arteries

• The conduction system

• The coronary arteries