Human Body System Grade 3B

What is this?

• Stomach

• Lungs

Do you know what is this?

• Respiratory system

• Digestive system

What does digestive system do?

• It changes food into nutrients

• It takes the oxygen we need and it expels carbon dioxide

What organ IS NOT in the digestive system?

• Lungs

• small intestine

How many chambers does the heart have?

• 2 chambers

• 4 chambers

What does the respiratory system do?

• Allows us to breathe and exchange carbon dioxide for oxygen.

• It changes food into nutrients

If we get hurt on the knee, what human body system does work?

• Nervous system

• Circulatory system

What is the function of bones?

• Protect internal organs

• It changes food into nutrients

What system does work in this picture?

• Respiratory system

• Musculoskeletal system

What keep you fit

• just sleep and do nothing

• Get plenty of exercise and eat nutirous food