respiratory system

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Across
  1. 3. the membrane lined cavity behind the nose and mouth, connecting them to the esophagus
  2. 4. protuberance in vertebrates that houses the nostrils, or nares, which receive and expel air for respiration alongside the mouth. Behind the nose are the olfactory mucosa and the sinuses
  3. 6. hronic condition where the walls of the bronchi are thickened from inflammation and infection
  4. 8. smocking can cause
  5. 9. a disease that causes repeated episodes of wheezing, breathlessness, chest tightness, and nighttime or early morning coughing
Down
  1. 1. the hollow muscular organ forming an air passage to the lungs and holding the vocal cords in humans and other mammals; the voice box
  2. 2. pair of organs situated within the rib cage consisting of elastic sacs with branching passages into which air is drawn so that oxygen can pass into the blood and carbon dioxide be removed
  3. 3. this diseases is in the lungs
  4. 5. a dome-shaped muscular partition separating the thorax from the abdomen in mammals. It plays a major role in breathing, as its contraction increases the volume of the thorax and so inflates the lungs
  5. 7. 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