WorksheetsExploring the Circulatory System
Total questions: 20
Worksheet time: 10mins
What is the name of the system in your body that moves blood around?
Digestive system
Circulatory system
Nervous system
Respiratory system
Which organ pumps blood through your body?
Brain
Heart
Lungs
Stomach
What are the blood vessels that carry blood away from the heart called?
Veins
Arteries
Capillaries
Nerves
What are the blood vessels that bring blood back to the heart called?
Arteries
Veins
Capillaries
Muscles
Which blood vessel is the smallest?
Artery
Vein
Capillary
Nerve
What does blood carry to all parts of your body?
Oxygen
Water
Food
Air
Which part of the circulatory system connects arteries and veins?
Capillaries
Heart
Lungs
Muscles
What is the main function of the circulatory system?
To help you breathe
To move blood and nutrients
To help you think
To help you move
Which vessel carries oxygen-rich blood from the heart to the body?
Vein
Artery
Capillary
Nerve
Which vessel carries blood with less oxygen back to the heart?
Artery
Vein
Capillary
Muscle
If you trace the path of blood starting from the heart, which vessel does it travel through first?
Vein
Artery
Capillary
Nerve
Why do capillaries need to be very thin?
To let blood move fast
To help oxygen and nutrients pass through easily
To keep blood warm
To make blood red
What happens to blood after it delivers oxygen to the body’s cells?
It stops moving
It returns to the heart through veins
It goes to the stomach
It turns into water
How does the heart help blood move through the body?
By pushing blood with strong beats
By making blood cold
By making blood thick
By stopping blood
If a person’s arteries are blocked, what might happen to their body?
Blood cannot reach all parts of the body
Blood moves faster
Blood turns blue
Blood gets thicker
Why is it important for blood to travel through capillaries?
To help blood stay red
To deliver oxygen and nutrients to cells
To make blood move faster
To keep blood warm
Imagine blood could not return to the heart. What would happen to the circulation process?
Blood would keep moving normally
Blood would stop moving and cells would not get what they need
Blood would get thicker
Blood would turn blue
If the heart stopped beating, what would happen to the major blood vessels?
They would keep moving blood
Blood would stop flowing through them
They would get bigger
They would turn into nerves
Why do you think arteries have thicker walls than veins?
To help them carry blood under higher pressure from the heart
To make blood move slower
To keep blood cold
To help blood turn blue
If someone has a problem with their capillaries, how might this affect their body’s cells?
Cells might not get enough oxygen and nutrients
Cells would get too much water
Cells would turn blue
Cells would get bigger
