Trachealis muscle
| Trachealis muscle | |
|---|---|
| Details | |
trachea | |
| Identifiers | |
| Latin | musculus trachealis |
| TA98 | A06.3.01.005 |
| TA2 | 3219 |
| FMA | 7466 |
| Anatomical terms of muscle] | |
The trachealis muscle is a sheet of smooth muscle in the trachea.
Structure
The trachealis muscle lies posterior to the
trachea, adjacent to the oesophagus.[1][2][3] This completes the ring of cartilages of the trachea.[3] The trachealis muscle also supports a thin cartilage on the inside of the trachea.[4] It is the only smooth muscle present in the trachea.[5]
Function
The primary function of the trachealis muscle is to constrict the trachea, allowing air to be expelled with more force, such as during coughing.[2]
Clinical significance
Tracheomalacia may involve hypotonia of the trachealis muscle.[6]
The trachealis muscle may become stiffer during ageing, which makes the whole trachea less elastic.[7]
In infants, the insertion of an oesophagogastroduodenoscope into the oesophagus may compress the trachealis muscle, and narrow the trachea.[8] This can result in reduced airflow to the lungs.[8] Infants may be intubated to make sure that the trachea is fixed open.[8]
See also
References
- ^ ISBN 978-0-7020-6294-0, retrieved 2021-01-21
- ^ ISBN 0781750563
- ^ ISBN 978-0-323-44284-8, retrieved 2021-01-23
- ISBN 978-0-323-37706-5, retrieved 2021-01-23
- ISBN 978-0-323-35214-7, retrieved 2021-01-23
- ISBN 978-0-323-35214-7, retrieved 2021-01-23
- ISBN 978-0-7216-0186-1, retrieved 2021-01-23
- ^ ISBN 978-0-323-42974-0, retrieved 2021-01-23
