Exploring Body Systems Quiz

What is the main function of the circulatory system in the human body?

• To help us digest food

• To transport oxygen, nutrients, and waste throughout the body

• To help us move our muscles

• To control our senses

Which organ is responsible for pumping blood throughout the body?

• Brain

• Heart

• Lungs

• Stomach

Which part of the nervous system is responsible for sending messages between the brain and the rest of the body?

• Digestive system

• Spinal cord

• Lungs

• Kidneys

What is the main function of the respiratory system?

• To break down food

• To exchange oxygen and carbon dioxide

• To pump blood

• To control movement

Which organ in the respiratory system is responsible for taking in oxygen and releasing carbon dioxide?

• Heart

• Lungs

• Brain

• Liver

What is the name of the tube that carries air from the nose and mouth to the lungs?

• Esophagus

• Trachea

• Aorta

• Vena cava

What is the main gas that humans exhale after breathing?

• Oxygen

• Nitrogen

• Carbon dioxide

• Hydrogen

Which of the following is NOT a part of the circulatory system?

• Heart

• Blood vessels

• Lungs

• Blood