Cardiovascular System REVIEW Check-UP

What is the main organ of the circulatory system?

• small intestine

• bone

• lungs

• heart

How does the heart work?

• It pumps blood first to the lungs, back to the heart and then around the rest of the body.

• It pumps blood first to the rest of the body, back to the lungs and then to the heart.

• It pumps blood around the rest of the body, back to the heart and then to the lungs,

______________ 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

The circulatory system works with the __________ system to obtain energy from nutrients that we eat. 

• respiratory 
• digestive
• skeletal
• nervous

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

Which of the following delivers oxygen to cells?

• Red Blood cells
• White blood cells
• Platelets
• Plasma

Which of the following are the blood vessels that helps blood flow to the heart?

• Veins
• Arteries
• Cappillaries

Which of the following are the blood vessels that have the thickest walls?

• Veins
• Arteries
• Cappillaries