1. What internal body organ is responsible for the continuous flow of
blood that delivers oxygen and nutrients to all body parts?
A. brain B. heart C. kidneys D. small intestine 2.Which body organs work together to break down the food into liquid form
and nutrients?
A. muscles and bones C. lungs and heart
B. stomach and intestines D. liver and kidney. 3. Which body organs clean the blood?
A. bones and muscles C. heart and lungs
B. kidneys and liver D. stomach and intestines 4.Which of the following statements does NOT describe the function of the
brain?
A. helps us remember, think and understand
B. filters the blood and removes waste materials
C. controls the beating of the heart and breathing
D. controls the muscle movements like walking and writing 5. 5.Why are the lungs important?
A. They pump blood through the blood vessels.
B. They absorb nutrients from the food that we eat.
C. They filter harmful substances and store energy.
D. They provide oxygen from inhaled air to the bloodstream and
exhale carbon dioxide.