Bird, syrinx (Gross, Low)
Bird, syrinx (Gross, Low) |
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Trachea Primary bronchi Internal tympanic membrane External tympanic membrane Cartilage rings |
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| The internal tympanic membrane is arranged so as to vibrate when air is passed through the syrinx. The vibration produces a sound and is modified by increasing tension on the tympanic membrane by muscular action. |