Circulatory System

What is the main organ of the circulatory system?

• Brain

• Lungs

• Heart

• Blood Vessels

The heart is a ____.

• blood vessel

• closed system

• muscle

• organ

Tags

NGSS.MS-LS1-3

How big is your heart?

• About the size of your brain

• About the size of your lungs

• About the size of a cell

• About the size of your fist

The heart is divided into how many chambers?

• 2

• 3

• 4

• 6

Which blood vessel carries blood away from the heart?

• Veins

• Arteries

• Capillaries

Which blood vessel carries blood toward the heart?

• Arteries

• Veins

• Capillaries

The _____ side of the heart receives blood from the BODY and pumps it to the _____.

The LEFT side of the heart receives blood from the _____ and pumps it to the ____.

What is the main artery in our body carrying oxygen rich blood?

• Aorta

• Pulmonary Artery

The atriums are responsible for taking blood into the heart while the ventricles pump it back out.

• True

• False