Cardiovascular System

What is the main organ of the circulatory system?

• small intestine

• bone

• lungs

• heart

Arteries carry oxygen rich blood away from the heart.

• True

• False

Veins carry oxygen poor blood back to the heart.

• False

• True

The job of the heart is to . . .

• pump blood around the body.

• send food to the small intestines.

• break down food.

• give energy to the body.

The heart is about the size and shape of your . . .

• head

• fist

• hand

• foot

______________ are the smallest blood vessels.

• Arteries
• Veins
• Capillaries

The circulatory system works with the ___________ system to provide our body with oxygen.

• respiratory
• digestive
• muscular
• skeletal

Which is NOT a function of the circulatory system?

• deliver O₂ and nutrients to cells
• remove CO₂ and wastes from cells
• break down carbohydrates into glucose
• transport other materials through body

arteries, veins, and capillaries are three types of __________

• heart valves
• blood vessels
• cells
• veins

What does Deoxygenated mean?

• Oxygen-rich
• Blood flow
• Oxygen-poor
• Water Flow