Respiratory system crossword puzzle

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Across
  1. 2. At the bottom of the larynx is the windpipe, also known as the _______
  2. 3. The trachea is divided into two bronchial tubes, called the ______, which carry air to each lung.
  3. 5. In each of the two lungs, the bronchi divide into smaller branches which contain millions of tiny air sacs called _____.
  4. 6. ___, which produces the sounds of voices, are contained in the larynx.
  5. 8. The _____ is a flap of tissue at the top of the larynx. It prevents food from entering the windpipe by covering the larynx when food is swallowed.
  6. 9. The _____, or voice box, is located at the bottom of the pharynx.
  7. 10. From the nose, air then passes through the ____, which is the area behind the nose that leads to the throat.
Down
  1. 1. tube that goes down your throat and connects to your lungs
  2. 4. Air is inhaled through the ___, where it is filtered, warmed and moistened.
  3. 7. The parts of the body that are used for breathing make up the ______. This system provides oxygen to each of the cells of the body. Oxygen is needed by all cells to get energy from food. A waste product called carbon dioxide, given off by cells, is carried away by this system