Circulatory System

What is the main organ of the circulatory system?

• heart

• lungs

• liver

What system carries blood around the body?

• digestive

• circulatory

• respiratory

What do the blood transport to the cells?

• water and food

• food and carbon dioxide

• food and oxygen

What does blood entering the left atrium contain?

• oxygen

• carbon dioxide

• nutrients

Through what part of the heart does the oxygenated blood leave the heart to get to the body?

• vena cava

• aorta

• pulmonary artery

What does blood entering the right atrium contain?

• oxygen

• carbon dioxide

• nutrients

Where does the blood go after entering the right atrium?

• the right ventricle

• the left ventricle

• the body

What blood vessels take blood away from the heart?

• veins

• arteries

• capillaries

What is the largest artery in the body?

• aorta

• vena cava

• pulmonary artery

What are blood vessels that carry blood to the heart called?

• arteries

• veins

• capillaries