Circulatory System

What chamber of the heart does the blood enter after leaving the lungs?

• right atrium
• right ventricle
• left atrium
• left ventricle

Which side of the heart has deoxygenated blood?

• Right side
• Left side
• Top half
• Bottom Half

What is the function of the circulatory system?

• transports nutrients and wastes
• breaks down toxins in the body
• transports information from the brain
• breaksdown food to absorbable nutrients

If you increase your activity, then your pulse increases because

• your cells need more oxygen sent to them
• you are breathing harder
• you need to digest more food to get energy
• your heart is slowing down

Your pulse is the number of times

• you breathe in a minute
• you breathe in a lifetime
• your heart beats in a minute
• your heart beats in a lifetime

These take blood away from the heart.

• capillaries
• veins
• valves
• arteries

These take blood to the heart.

• capillaries
• veins
• valves
• arteries

These connect the other vessels allowing the blood to exchange oxygen and carbon dioxide.

• capillaries
• veins
• valves
• arteries

What prevents blood from flowing back into the heart?

• capillaries
• veins
• valves
• arteries

Write the number for the right atrium

• 2
• 6
• 9
• 12