| 1 | Stiff rings around the tube mimicked the structure of a human trachea. | |
| 2 | In most animals, the trachea (the passage for air) and the esophagus (the passage for food) are oriented such that the esophagus is below the trachea. | |
| 3 | For starters, thyme flavonoids relax tracheal and ileal muscles, which are involved in coughing. | |
| 4 | It enters the windpipe and moves through the lungs toward the tail, then back out the nostrils through the windpipe. | |
| 5 | This last line that I've read seems itself to have been grated on a scrannel pipe. |
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