Trachealis muscle

The trachealis muscle is a smooth muscle that bridges the gap between the free ends of C-shaped cartilages at the posterior border of the trachea, adjacent to the esophagus.[1]

Trachealis muscle
NerveVagus nerve and upper thoracic spinal nerves
ActionsConstricts trachea
LatinMusculus trachealis
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.[1]

See also


  1. Ross, Michael H.; Pawlina, Wojciech (2005), Histology a Text and Atlas (5th edition), LWW, p. 617, ISBN 0781750563

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