Bill Nye: Blood and Circulation

Capillaries are so small that blood cells have to travel _____ through them.

• single file

• in pairs

• backwards

• very slowly

It takes ____ sec. for blood to go around your body when you’re exercising.

• 1

• 5

• 10

• 20

Your heart ___________________ so that it can pump blood to your entire body.

• beats

• blood

• veins

• wastes

____________________ are very small blood vessels next to every cell in your body.

• arteries

• capillaries

• veins

• wastes

Your ___________________ carries all the nutrients to your bones.

• arteries

• capillaries

• veins

• blood

Our bodies use blood to transport oxygen, food and ___________________ .

• arteries

• waste

• veins

• blood

Tags

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The left and right side of your heart send blood to the _______________________

• same place

• different places

• squeezed

• blood

In your blood vessels you have both ___________________ and white blood cells.

• red

• veins

• squeezed

• blood

Tags

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What is the primary function of red blood cells in the circulatory system?

• Transport oxygen

• Fight infections

• Clot blood

• Regulate temperature

Which component of blood is responsible for clotting?

• Red blood cells

• White blood cells

• Platelets

• Plasma