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|Nerve||Vagus nerve and upper thoracic spinal nerves|
|Anatomical terms of muscle|
The primary function of the trachealis muscle is to constrict the trachea, allowing air to be expelled with more force, e.g., during coughing.
- Histology a Text and Atlas/ Michael H. Ross, Wojciech Pawlina.,-5th ed., pg.617
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