Sternothyroid muscle
| Sternothyroid muscle |
|---|
|
| Neck muscles of man |
| origin |
| Back of the sternum (manubrium sterni) |
| approach |
| Thyroid cartilage ( cartilago thyroidea ) |
| function |
| pulls the hyoid bone down (fixation of the hyoid bone), shifts the larynx and hyoid bone downwards |
| Innervation |
| Ansa cervicalis (plexus cervicalis) and C4 |
The sternothyroid muscle ("sternum thyroid cartilage muscle", obsolete musculus sternothyreoideus ) is a pair of narrow, striated muscle that pulls from the so-called "handle" ( manubrium sterni ) of the breastbone to the thyroid cartilage ( cartilago thyroidea ) of the larynx . Functionally, it continues in the thyrohyoid muscle that pulls to the hyoid bone and thus belongs to the lower hyoid bone muscles ( infrahyal muscles ).
The muscle pulls the larynx and hyoid bone down and is involved in the act of swallowing . The innervation takes place via the ansa cervicalis profunda , a nerve loop of the neck plexus , and via direct branches from the spinal cord segment C4.
literature
- Michael Schünke , Erik Schulte , Udo Schumacher : Prometheus. Anatomy Learning Atlas. Head, Neck and Neuroanatomy . 4th edition. Thieme, Stuttgart 2015, ISBN 978-3-13-139544-3 , p. 90-91 .
- Franz-Viktor Salomon: muscle tissue. In: FV. Salomon, H. Geyer, U. Gille (ed.): Anatomy for veterinary medicine . Enke, Stuttgart 2004, ISBN 3-8304-1007-7 , pp. 147-234.