Circulation and Blood Quiz

What messenger makes trillions of stops in just thirty seconds?

• White blood cells

• Red blood cells

• Blood

• Plasma

What pumps blood through your body?

• Brain

• Stomach

• Heart

• Lungs

Blood vessels that carry blood away from the heart are called:

• Lymphatic vessels

• Capillaries

• Veins

• Arteries

What percent of blood is liquid?

• 90%

• 80%

• 60%

• 70%

Which blood cells are the largest?

• Plasma

• Platelets

• White blood cells

• Red blood cells

When you cut yourself, which part of the blood helps you to stop bleeding?

• Plasma

• Platelets

• White blood cells

• Red blood cells

Oxygen is needed by cells.

• False

• True

What substance in red blood cells joins with oxygen?

• White blood cells

• Platelets

• Hemoglobin

• Plasma

Where does the blood pick up oxygen?

• In the heart

• In the arteries and veins

• In the lungs

• In the brain

What gives blood its color?

• White blood cells

• Hemoglobin

• Plasma

• Platelets