Trachealis muscle

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Trachealis muscle
Nerve Vagus nerve and upper thoracic spinal nerves
Actions Constricts trachea
Latin Musculus trachealis
TA A06.3.01.005
FMA 7466
Anatomical terms of 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]

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[edit]


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