Understanding the Circulatory System

What is the primary function of the circulatory system?

• To digest food

• To support the skeletal system

• To move blood throughout the body

• To control the nervous system

What is the heart compared to in the text?

• A computer

• A battery

• A water pump

• A solar panel

Which type of blood vessel carries blood away from the heart?

• Veins

• Capillaries

• Arteries

• Lymph vessels

What is the role of red blood cells?

• To transport hormones

• To form blood clots

• To carry oxygen

• To fight infections

What do white blood cells do?

• Carry oxygen

• Fight off germs and infections

• Remove carbon dioxide

• Transport nutrients

What is plasma described as in the text?

• The engine of the body

• The body's highways

• The body's soldiers

• The liquid part of the blood

What happens at the capillary stations?

• Nutrients are absorbed

• Oxygen is dropped off and waste is picked up

• Blood is oxygenated

• Blood is deoxygenated

What is the circulatory system compared to in terms of its function?

• A delivery service

• A power plant

• A communication system

• A computer network

What is the size of the heart compared to?

• A tennis ball

• A grapefruit

• A fist

• A football

What is the function of platelets?

• To carry oxygen

• To fight infections

• To form blood clots

• To transport nutrients