Which of the following is NOT a type of blood vessel?

• Arteries

• Veins

• Capillaries

• Nerves

What is the heart often referred to as in the body?

• The body's filter

• The body's pump

• The body's brain

• The body's engine

Which of the following is a function of the circulatory system?

• To digest food

• To circulate blood

• To produce hormones

• To store fat

When is blood pressure lowest?

• When the heart contracts

• During exercise

• Between heartbeats

• When you are eating

Which part of the blood is primarily involved in the immune response?

• Red blood cells

• White blood cells

• Platelets

• Blood plasma

What is the main function of the respiratory system?

• To digest food

• To enable you to breathe

• To circulate blood

• To move muscles

What is the main function of the nervous system?

• Digestion

• Circulation

• Control and communication

• Respiration

What are neurons?

• Cells that carry electrical messages

• Cells that digest food

• Cells that pump blood

• Cells that store fat

Which system is responsible for control and communication in the body?

• Digestive system

• Respiratory system

• Nervous system

• Circulatory system

What is the primary role of red blood cells?

• To store nutrients

• To fight infections

• To carry oxygen

• To clot blood