The nose cleans the air we inhale. The diaphragm forces air in and out of the lungs.The vibration of the vocal cords produces sound.The heart pumps blood throughout the body.Blood carries oxygen and nutrients to all parts of the body. Cells in the body fight infections.The skin protects us from germs and infection. Kidneys clean and filter the blood.Tears from tear ducts wet and clean the eyes.The teeth break food into small pieces for digestion.Action verbs are words that tell us what someone or something does—also show actions/movements in a sentence.