What is the main function of the respiratory system?, Pump blood, Digest food, Take in oxygen and remove carbon dioxide., Control body movement, Which organ is primarily responsible for breathing?, Heart, Lungs, Kidney, Stomach, Air enters the body through the:, Nose, Liver, Skin, Intestine, Which tube carries air from the nose to the lungs?, Esophagus, Aorta, Trachea, Ureter, What tiny air sacs are found in the lungs?, Alveoli, Neurons, Capillaries, Villi, What gas do humans inhale?, Nitrogen, Carbon dioxide, Oxygen, Helium, What gas do humans exhale?, Oxygen, Carbon dioxide, Hydrogen, Nitrogen, What happens in the alveoli?, Food is digested, Blood is produced, Gas exchange occurs, Waste is removed, Which habit helps keep the respiratory system healthy?, Smoking, Staying in polluted areas, Exercising regularly, Inhaling harmful chemicals, Why is oxygen important to the body?, It helps make energy, It causes diseases, It replaces blood, It stops breathing

Respiratory System

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