Superior longitudinal muscle of tongue explained

Superior longitudinal muscle of tongue
Latin:	musculus longitudinalis superior linguae
Origin:	Close to epiglottis, from median fibrous septum
Insertion:	Edges of tongue
Nerve:	Hypoglossal nerve (CN XII)
Action:	Retracts tongue with inferior longitudinal muscle, making tongue short and thick

The superior longitudinal muscle of tongue or superior lingualis is a thin layer of oblique and longitudinal fibers immediately underlying the mucous membrane on the dorsum of the tongue.

Structure

The superior longitudinal muscle of the tongue is one of the intrinsic muscles of the tongue.^[1] It arises from the submucous fibrous layer close to the epiglottis and from the median fibrous septum, and runs forward to the edges of the tongue.

Nerve supply

The superior longitudinal muscle of the tongue is supplied by the hypoglossal nerve (CN XII).^[2]

Function

The superior longitudinal muscle of the tongue works with the other intrinsic muscles to move the tongue.

References

1. Book: Aggarwal. Annu. https://www.sciencedirect.com/science/article/pii/B9780444520142000446. Handbook of Clinical Neurology. Thompson. Philip D.. Elsevier. 2011. 978-0-444-52014-2. 617–628. en. 44 - Unusual focal dyskinesias. 100 . 10.1016/B978-0-444-52014-2.00044-6. 21496611 . 0072-9752.
2. Book: Love. Russell J.. https://www.sciencedirect.com/science/article/pii/B9780750690768500137. Neurology for the Speech-Language Pathologist. Webb. Wanda G.. Butterworth-Heinemann. 1992. 978-0-7506-9076-8. 2nd. 112–136. en. 7 - The Cranial Nerves. 10.1016/B978-0-7506-9076-8.50013-7.