respiratory system

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Across
  1. 1. the part of the larynx consisting of the vocal cords and the opening between them. It affects voice modulation through expansion or contraction.
  2. 4. the cartilage and bone in your nose
  3. 6. a flap of cartilage at the root of the tongue, which is depressed during swallowing to cover the opening of the windpipe.
  4. 8. a large membranous tube reinforced by rings of cartilage, extending from the larynx to the bronchial tubes and conveying air to and from the lungs; the windpipe
  5. 10. the hollow muscular organ forming an air passage to the lungs and holding the vocal cords in humans and other mammals; the voice box.
Down
  1. 2. a substance which tends to reduce the surface tension of a liquid in which it is dissolved
  2. 3. a cavity within a bone or other tissue, especially one in the bones of the face or skull connecting with the nasal cavities.
  3. 5. The hollow tube inside the neck that starts behind the nose and ends at the top of the trachea
  4. 7. each of a pair of serous membranes lining the thorax and enveloping the lungs in humans and other mammals
  5. 9. a short microscopic hairlike vibrating structure, providing propulsion