Exploring Human Body Systems

What is the primary function of the circulatory system?

• To break down food and absorb nutrients

• To move blood throughout the body

• To protect the body from infections

• To support the body and allow movement

Which organ is considered the main component of the circulatory system?

• Lungs

• Liver

• Heart

• Kidneys

What does the circulatory system deliver to the organs and cells?

• Carbon dioxide and waste products

• Oxygen and nutrients

• Hormones and enzymes

• Vitamins and minerals

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

• Arteries

• Veins

• Capillaries

• Stomach

What role does the circulatory system play in regulating body temperature?

• It absorbs heat from the environment

• It distributes heat throughout the body

• It cools the body by producing sweat

• It has no role in temperature regulation

Which system is responsible for breaking down food and absorbing nutrients?

• Respiratory system

• Circulatory system

• Digestive system

• Nervous system

Which of the following organs is part of the digestive system?

• Heart

• Lungs

• Stomach

• Kidneys

How many main organ systems are there in the human body?

• 5

• 8

• 11

• 14

What is another name for the circulatory system?

• Respiratory system

• Cardiovascular system

• Nervous system

• Endocrine system

Which of the following is a function of the heart?

• To filter waste from the blood

• To pump blood throughout the body

• To produce digestive enzymes

• To exchange gases with the environment