Genioglossus muscle
| Genioglossus muscle |
|---|
|
| Tongue muscles of man |
| origin |
| Spina mentalis mandibulae |
| approach |
| Aponeurosis linguae , hyoid bone , epiglottis |
| function |
| pulls the tongue forward and down |
| Innervation |
| Branches of the cervical plexus (C1, C2) over the hypoglossal nerve |
The musculus genioglossus ( Latin for “chin-tongue muscle”) is one of the outer muscles of the tongue . It arises from the mandibular spine of the mandible ( Spina mentalis mandibulae ), radiates in a fan shape into the tongue and attaches to the aponeurosis linguae . It is also attached to the hyoid bone ( os hyoideum ) and the epiglottis . The muscle mainly pulls the tongue forward and down to the floor of the oral cavity. To a lesser extent, it can also pull the epiglottis and hyoid bone forward.
In interaction with the other muscles, it is important for chewing , swallowing , speaking and sucking . The tongue muscles form the tongue sounds ( linguals ).
clinic
If the genioglossus muscle relaxes when unconscious, the tongue can fall back into the pharynx when lying on your back and thus prevent vomit from passing through unhindered. This leads to attacks of suffocation and death. For this reason, the unconscious must be placed on their side and the head overstretched. Also opioids can by central effect on the motor core hypoglossal nerve the tone as far as reduce the muscle that leads to a transfer of the laryngeal inlet by the tongue.
Individual evidence
- ^ Karl Zilles, Bernhard Tillmann : Anatomie . Springer, 2010, ISBN 978-3-540-69483-0 , pp. 435 .
- ↑ George A. Gregory, Dean B. Andropoulos: Gregory's Pediatric Anesthesia . 5th edition. John Wiley & Sons, 2011, ISBN 978-1-4443-4516-2 , pp. 358 .